feat(check-ip): embedded web UI with IP Location & Status, domain resolution, and richer GeoIP data

- Embed web UI (index.html, app.js, style.css) via go:embed
- Title: 'IP Location & Status' instead of 'check-ip'
- 'Show my IP Info' link for lookups of the visitor's own IP
- Domain resolution with resolved_from field in JSON
- Richer GeoIP fields: region ISO, continent, coordinates, traits, etc.
- /api/raw debug endpoint for raw MaxMind records
- net/geoip: expand Info struct and add LookupRaw method

cmd/check-ip/HANDOFF.md

@@ -0,0 +1,27 @@
+# check-ip — Handoff
+
+## Done
+
+- Embedded web UI at `/` (index.html, app.js, style.css)
+- `//go-embed web/**` + `fs.Sub(webFS, "web")` + `http.FileServer`
+- `GET /check?host=` — resolves domains, returns JSON verdict
+- `GET /check?` (empty host) — returns client's IP (via X-Forwarded-For / RemoteAddr)
+- `GET /check?host=<ip>` — pre-fills input and auto-submits on page load
+- `GET /healthz` — dataset health
+- Deployed to `ip.bnna.net:3080`
+- Created `go-webapp-embed` skill
+
+## Remaining
+
+1. **`?ip=` query param removed** — `handle()` only checks `host` now. Existing API consumers using `?ip=` will break. Fix:
+   ```go
+   query := cmp.Or(r.URL.Query().Get("host"), r.URL.Query().Get("ip"))
+   ```
+
+2. **`105dvh` in CSS** — not universally supported. Use `100dvh` or `min-height: 100vh`.
+
+3. **Domain resolution uses only first result** — `net.LookupHost` can return IPv4 + IPv6. Consider showing all resolved addresses.
+
+4. **No debouncing on client** — fast clicks send multiple requests. Add a simple debounce in app.js.
+
+5. **Error display is raw** — DNS errors show technical messages. Could map to user-friendly text.

cmd/check-ip/go.mod

@@ -10,6 +10,8 @@ require (
 	github.com/therootcompany/golib/sync/dataset v0.5.0
 )
 
+replace github.com/therootcompany/golib/net/geoip => ../../net/geoip
+
 require (
 	github.com/oschwald/geoip2-golang v1.13.0 // indirect
 	github.com/oschwald/maxminddb-golang v1.13.0 // indirect

cmd/check-ip/main.go

@@ -5,6 +5,7 @@ package main
 
 import (
 	"context"
+	"embed"
 	"encoding/base64"
 	"encoding/csv"
 	"encoding/json"
@@ -29,6 +30,9 @@ import (
 	"github.com/therootcompany/golib/sync/dataset"
 )
 
+//go:embed web/**
+var webFS embed.FS
+
 // Replaced by goreleaser / ldflags at build time.
 var (
 	name        = "check-ip"

cmd/check-ip/server.go

@@ -6,6 +6,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"io/fs"
 	"log"
 	"net"
 	"net/http"
@@ -13,6 +14,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/oschwald/geoip2-golang"
 	"github.com/therootcompany/golib/net/geoip"
 	"github.com/therootcompany/golib/net/ipcohort"
 	"github.com/therootcompany/golib/sync/dataset"
@@ -21,6 +23,7 @@ import (
 // Result is the JSON verdict for a single IP.
 type Result struct {
 	IP              string     `json:"ip"`
+	ResolvedFrom    string     `json:"resolved_from,omitzero"`
 	Blocked         bool       `json:"blocked"`
 	BlockedInbound  bool       `json:"blocked_inbound"`
 	BlockedOutbound bool       `json:"blocked_outbound"`
@@ -49,6 +52,16 @@ func (c *IPCheck) lookup(ip string) Result {
 	return res
 }
 
+// lookupRaw returns the raw geoip.Info for an IP.
+func (c *IPCheck) lookupRaw(ip string) geoip.Info {
+	return c.geo.Value().Lookup(ip)
+}
+
+// lookupRawCity returns the raw *geoip2.City record for an IP.
+func (c *IPCheck) lookupRawCity(ip string) *geoip2.City {
+	return c.geo.Value().LookupRaw(ip)
+}
+
 // writePretty renders res as space-aligned plain text.
 func (c *IPCheck) writePretty(w io.Writer, res Result) {
 	switch {
@@ -82,18 +95,36 @@ func (c *IPCheck) writePretty(w io.Writer, res Result) {
 }
 
 func (c *IPCheck) handle(w http.ResponseWriter, r *http.Request) {
-	ip := strings.TrimSpace(r.URL.Query().Get("ip"))
+	query := strings.TrimSpace(r.URL.Query().Get("host"))
-	if ip == "" {
+	if query == "" {
 		if xff := r.Header.Get("X-Forwarded-For"); xff != "" {
 			first, _, _ := strings.Cut(xff, ",")
-			ip = strings.TrimSpace(first)
+			query = strings.TrimSpace(first)
 		} else if host, _, err := net.SplitHostPort(r.RemoteAddr); err == nil {
-			ip = host
+			query = host
 		} else {
-			ip = r.RemoteAddr
+			query = r.RemoteAddr
 		}
 	}
+
+	// Resolve hostname to IP if needed.
+	ip := query
+	if net.ParseIP(ip) == nil {
+		addrs, err := net.LookupHost(ip)
+		if err != nil {
+			w.Header().Set("Content-Type", "application/json; charset=utf-8")
+			w.WriteHeader(http.StatusBadRequest)
+			json.NewEncoder(w).Encode(map[string]string{"error": err.Error()})
+			return
+		}
+		ip = addrs[0]
+	}
+
 	res := c.lookup(ip)
+	res.IP = ip
+	if query != ip {
+		res.ResolvedFrom = query
+	}
 
 	if r.URL.Query().Get("format") == "json" ||
 		strings.Contains(r.Header.Get("Accept"), "application/json") {
@@ -108,6 +139,32 @@ func (c *IPCheck) handle(w http.ResponseWriter, r *http.Request) {
 	c.writePretty(w, res)
 }
 
+func (c *IPCheck) debugRaw(w http.ResponseWriter, r *http.Request) {
+	query := strings.TrimSpace(r.URL.Query().Get("host"))
+	if query == "" {
+		w.Header().Set("Content-Type", "application/json; charset=utf-8")
+		w.WriteHeader(http.StatusBadRequest)
+		json.NewEncoder(w).Encode(map[string]string{"error": "?host= required"})
+		return
+	}
+	ip := query
+	if net.ParseIP(ip) == nil {
+		addrs, err := net.LookupHost(ip)
+		if err != nil {
+			w.Header().Set("Content-Type", "application/json; charset=utf-8")
+			w.WriteHeader(http.StatusBadRequest)
+			json.NewEncoder(w).Encode(map[string]string{"error": err.Error()})
+			return
+		}
+		ip = addrs[0]
+	}
+	rec := c.lookupRawCity(ip)
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	enc := json.NewEncoder(w)
+	enc.SetIndent("", "  ")
+	_ = enc.Encode(rec)
+}
+
 type dsStatus struct {
 	Loaded   bool      `json:"loaded"`
 	Size     int       `json:"size,omitzero"`
@@ -158,7 +215,11 @@ func (c *IPCheck) serve(ctx context.Context) error {
 	mux := http.NewServeMux()
 	mux.HandleFunc("GET /check", c.handle)
 	mux.HandleFunc("GET /healthz", c.healthz)
-	mux.HandleFunc("GET /{$}", c.handle)
+	mux.HandleFunc("GET /api/raw", c.debugRaw)
+
+	// Serve embedded web files.
+	webSub, _ := fs.Sub(webFS, "web")
+	mux.Handle("/", http.FileServer(http.FS(webSub)))
 
 	srv := &http.Server{
 		Addr:              c.Bind,

cmd/check-ip/web/app.js

@@ -0,0 +1,203 @@
+(function () {
+  "use strict";
+
+  const form      = document.querySelector(".search-form");
+  const input     = form.querySelector('input[type="text"]');
+  const btn       = form.querySelector("button");
+  const myIpLink  = document.getElementById("my-ip-link");
+  const loading   = document.querySelector(".loading");
+  const errorEl   = document.querySelector(".error-msg");
+  const resultEl  = document.querySelector(".result");
+
+  function show(el) { el.classList.add("visible"); }
+  function hide(el) { el.classList.remove("visible"); }
+
+  function render(result) {
+    hide(errorEl);
+    hide(resultEl);
+
+    const host = result.ip;
+    const resolvedFrom = result.resolved_from || "";
+    const blocked = result.blocked;
+    const blockedIn = result.blocked_inbound;
+    const blockedOut = result.blocked_outbound;
+    const whitelisted = result.allowlisted;
+    const geo = result.geo || {};
+
+    // Verdict
+    let verdictClass = "unknown";
+    let verdictText = "UNKNOWN";
+    if (whitelisted) {
+      verdictClass = "whitelist";
+      verdictText = "ALLOWED (whitelist)";
+    } else if (blocked) {
+      verdictClass = "blocked";
+      verdictText = "BLOCKED";
+    } else {
+      verdictClass = "allowed";
+      verdictText = "ALLOWED";
+    }
+
+    // Geo info
+    let geoParts = [];
+    if (geo.city) geoParts.push(geo.city);
+    if (geo.region) {
+      geoParts.push(geo.region + (geo.region_iso ? " (" + geo.region_iso + ")" : ""));
+    } else if (geo.region_iso) {
+      geoParts.push(geo.region_iso);
+    }
+    if (geo.country) {
+      geoParts.push(geo.country + (geo.country_iso ? " (" + geo.country_iso + ")" : ""));
+    }
+    if (geo.continent) {
+      geoParts.push(geo.continent + (geo.continent_code ? " (" + geo.continent_code + ")" : ""));
+    }
+    let geoStr = geoParts.length ? geoParts.join(", ") : "—";
+    let latLonStr = "";
+    if (geo.latitude || geo.longitude) {
+      latLonStr = geo.latitude.toFixed(4) + ", " + geo.longitude.toFixed(4);
+    }
+    let asnStr = geo.asn ? "AS" + geo.asn + " " + (geo.asn_org || "") : "—";
+    let postalStr = geo.postal_code || "";
+    let tzStr = geo.timezone || "";
+    let metroStr = geo.metro_code ? String(geo.metro_code) : "";
+    let accuracyStr = geo.accuracy_radius ? String(geo.accuracy_radius) : "";
+    let registeredStr = geo.registered_country ? (geo.registered_country + (geo.registered_country_iso ? " (" + geo.registered_country_iso + ")" : "")) : "";
+
+    // Trait badges
+    let traitBadges = "";
+    if (geo.anycast) {
+      traitBadges += '<span class="trait-badge anycast">anycast</span>';
+    }
+    if (geo.anonymous_proxy) {
+      traitBadges += '<span class="trait-badge anonymous">anonymous proxy</span>';
+    }
+    if (geo.satellite) {
+      traitBadges += '<span class="trait-badge satellite">satellite</span>';
+    }
+    if (geo.country_in_eu) {
+      traitBadges += '<span class="trait-badge eu">EU</span>';
+    }
+
+    // Block details
+    let blockHtml = "";
+    if (blockedIn || blockedOut) {
+      const parts = [];
+      if (blockedIn) parts.push("inbound");
+      if (blockedOut) parts.push("outbound");
+      blockHtml = '<span class="block-badge">BLOCKED: ' + parts.join(" + ") + '</span>';
+    } else {
+      blockHtml = '<span class="block-badge clean">clean</span>';
+    }
+
+    resultEl.innerHTML =
+      '<div class="result-header">' +
+        '<span class="verdict ' + verdictClass + '">' + verdictText + '</span>' +
+        '<span class="host">' + escapeHtml(host) + '</span>' +
+        (resolvedFrom ? '<span class="resolved">→ ' + escapeHtml(resolvedFrom) + '</span>' : '') +
+      '</div>' +
+      '<div class="result-body">' +
+        (geoStr !== "—" ?
+          '<div class="result-section">' +
+            '<h3>Location</h3>' +
+            '<p class="mono">' + escapeHtml(geoStr) + '</p>' +
+          '</div>' : '') +
+        (latLonStr ?
+          '<div class="result-section">' +
+            '<h3>Coordinates</h3>' +
+            '<p class="mono">' + escapeHtml(latLonStr) + '</p>' +
+          '</div>' : '') +
+        (postalStr || tzStr || metroStr || accuracyStr ?
+          '<div class="result-section">' +
+            '<h3>Details</h3>' +
+            '<p class="mono">' +
+              (postalStr ? escapeHtml(postalStr) + " " : "") +
+              (tzStr ? escapeHtml(tzStr) + " " : "") +
+              (metroStr ? "Metro " + escapeHtml(metroStr) + " " : "") +
+              (accuracyStr ? "±" + escapeHtml(accuracyStr) + "km" : "") +
+            '</p>' +
+          '</div>' : '') +
+        (traitBadges ?
+          '<div class="result-section">' +
+            '<h3>Traits</h3>' +
+            '<div class="block-list">' + traitBadges + '</div>' +
+          '</div>' : '') +
+        (registeredStr ?
+          '<div class="result-section">' +
+            '<h3>Registered Country</h3>' +
+            '<p class="mono">' + escapeHtml(registeredStr) + '</p>' +
+          '</div>' : '') +
+        '<div class="result-section">' +
+          '<h3>ASN</h3>' +
+          '<p class="mono">' + escapeHtml(asnStr) + '</p>' +
+        '</div>' +
+        '<div class="result-section">' +
+          '<h3>Blocklist</h3>' +
+          '<div class="block-list">' + blockHtml + '</div>' +
+        '</div>' +
+      '</div>';
+
+    show(resultEl);
+  }
+
+  function escapeHtml(s) {
+    const d = document.createElement("div");
+    d.textContent = s;
+    return d.innerHTML;
+  }
+
+  function submitHost(host) {
+    hide(errorEl);
+    hide(resultEl);
+    show(loading);
+    btn.disabled = true;
+
+    fetch("/check?host=" + encodeURIComponent(host) + "&format=json")
+      .then(function (r) {
+        if (!r.ok) throw new Error("HTTP " + r.status);
+        return r.json();
+      })
+      .then(function (data) {
+        hide(loading);
+        render(data);
+      })
+      .catch(function (err) {
+        hide(loading);
+        errorEl.textContent = "Error: " + err.message;
+        show(errorEl);
+      })
+      .finally(function () {
+        btn.disabled = false;
+      });
+  }
+
+  form.addEventListener("submit", function (e) {
+    e.preventDefault();
+    submitHost(input.value.trim());
+  });
+
+  myIpLink.addEventListener("click", function (e) {
+    e.preventDefault();
+    submitHost("");
+  });
+
+  // Pre-fill from URL query param or hash fragment and auto-submit
+  (function init() {
+    let host = new URLSearchParams(window.location.search).get("host");
+    // Also check hash fragment (e.g. /#/?host=google.com)
+    if (!host) {
+      const hashQuery = window.location.hash.split("?")[1];
+      if (hashQuery) {
+        host = new URLSearchParams(hashQuery).get("host");
+      }
+    }
+    if (host) {
+      input.value = host;
+      submitHost(host);
+    }
+    // Focus input on load (only if no auto-submit triggered)
+    if (!host) {
+      input.focus();
+    }
+  })();
+})();

cmd/check-ip/web/index.html

@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <title>IP Location & Status</title>
+  <link rel="stylesheet" href="/style.css">
+</head>
+<body>
+  <div class="container">
+    <h1>IP Location & Status</h1>
+    <p class="subtitle">Look up an IP address, domain, or your own IP against blocklists and GeoIP databases.</p>
+
+    <form class="search-form" autocomplete="off">
+      <input type="text" name="host" placeholder="Enter IP or domain…">
+      <button type="submit">Check</button>
+    </form>
+
+    <a href="#" class="my-ip-link" id="my-ip-link">Show my IP Info</a>
+
+    <div class="loading">
+      <span class="spinner"></span> Resolving and checking…
+    </div>
+
+    <div class="error-msg"></div>
+
+    <div class="result"></div>
+
+    <footer>
+      <a href="/healthz">/healthz</a>
+    </footer>
+  </div>
+
+  <script src="/app.js"></script>
+</body>
+</html>

cmd/check-ip/web/style.css

@@ -0,0 +1,377 @@
+/* ── Reset & base ─────────────────────────────────────────── */
+*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
+
+:root {
+  --bg:        #fafafa;
+  --surface:   #ffffff;
+  --text:      #1a1a2e;
+  --muted:     #6b7280;
+  --primary:   #2563eb;
+  --primary-hover: #1d4ed8;
+  --ok:        #16a34a;
+  --ok-bg:     #dcfce7;
+  --ok-border: #86efac;
+  --bad:       #dc2626;
+  --bad-bg:    #fee2e2;
+  --bad-border:#fca5a5;
+  --warn:      #d97706;
+  --warn-bg:   #fef3c7;
+  --warn-border:#fcd34d;
+  --border:    #e5e7eb;
+  --radius:    8px;
+  --shadow:    0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
+  --shadow-lg: 0 4px 12px rgba(0,0,0,.1);
+  --font:      -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
+               "Helvetica Neue", Arial, sans-serif;
+  --mono:      "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
+  --max-w:     640px;
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    --bg:        #0f0f17;
+    --surface:   #1a1a2e;
+    --text:      #e5e7eb;
+    --muted:     #9ca3af;
+    --primary:   #60a5fa;
+    --primary-hover: #93bbfd;
+    --ok:        #4ade80;
+    --ok-bg:     #14532d;
+    --ok-border: #166534;
+    --bad:       #f87171;
+    --bad-bg:    #450a0a;
+    --bad-border:#991b1b;
+    --warn:      #fbbf24;
+    --warn-bg:   #451a03;
+    --warn-border:#92400e;
+    --border:    #2d2d3f;
+    --shadow:    0 1px 3px rgba(0,0,0,.3);
+    --shadow-lg: 0 4px 12px rgba(0,0,0,.4);
+  }
+}
+
+html {
+  font-family: var(--font);
+  font-size: 16px;
+  line-height: 1.6;
+  color: var(--text);
+  background: var(--bg);
+  -webkit-font-smoothing: antialiased;
+}
+
+body {
+  min-height: 100dvh;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  padding: 2rem 1rem;
+}
+
+/* ── Layout ───────────────────────────────────────────────── */
+.container {
+  width: 100%;
+  max-width: var(--max-w);
+}
+
+/* ── Header ───────────────────────────────────────────────── */
+h1 {
+  font-size: 1.5rem;
+  font-weight: 700;
+  margin-bottom: .25rem;
+}
+
+.subtitle {
+  color: var(--muted);
+  font-size: .875rem;
+  margin-bottom: 2rem;
+}
+
+/* ── Form ─────────────────────────────────────────────────── */
+.search-form {
+  display: flex;
+  gap: .5rem;
+  margin-bottom: 1.5rem;
+}
+
+input[type="text"] {
+  flex: 1;
+  padding: .625rem 1rem;
+  font-size: 1rem;
+  font-family: var(--font);
+  border: 1.5px solid var(--border);
+  border-radius: var(--radius);
+  background: var(--surface);
+  color: var(--text);
+  outline: none;
+  transition: border-color .15s;
+}
+
+input[type="text"]::placeholder { color: var(--muted); }
+input[type="text"]:focus { border-color: var(--primary); }
+
+button {
+  padding: .625rem 1.25rem;
+  font-size: .9375rem;
+  font-weight: 600;
+  font-family: var(--font);
+  color: #fff;
+  background: var(--primary);
+  border: none;
+  border-radius: var(--radius);
+  cursor: pointer;
+  transition: background .15s;
+  white-space: nowrap;
+}
+
+button:hover { background: var(--primary-hover); }
+button:active { transform: scale(.98); }
+button:disabled {
+  opacity: .6;
+  cursor: not-allowed;
+}
+
+/* ── Result card ──────────────────────────────────────────── */
+.result {
+  display: none;
+  background: var(--surface);
+  border: 1px solid var(--border);
+  border-radius: var(--radius);
+  box-shadow: var(--shadow);
+  overflow: hidden;
+}
+
+.result.visible { display: block; }
+
+.result-header {
+  padding: 1rem 1.25rem;
+  border-bottom: 1px solid var(--border);
+  display: flex;
+  align-items: center;
+  gap: .75rem;
+}
+
+.result-header .host {
+  font-family: var(--mono);
+  font-size: 1.125rem;
+  font-weight: 600;
+  word-break: break-all;
+}
+
+.result-header .resolved {
+  font-size: .8125rem;
+  color: var(--muted);
+  font-family: var(--mono);
+  word-break: break-all;
+}
+
+.verdict {
+  display: inline-flex;
+  align-items: center;
+  gap: .375rem;
+  font-size: .75rem;
+  font-weight: 700;
+  text-transform: uppercase;
+  letter-spacing: .05em;
+  padding: .25rem .625rem;
+  border-radius: 999px;
+  white-space: nowrap;
+}
+
+.verdict.allowed {
+  background: var(--ok-bg);
+  color: var(--ok);
+  border: 1px solid var(--ok-border);
+}
+
+.verdict.blocked {
+  background: var(--bad-bg);
+  color: var(--bad);
+  border: 1px solid var(--bad-border);
+}
+
+.verdict.whitelist {
+  background: var(--warn-bg);
+  color: var(--warn);
+  border: 1px solid var(--warn-border);
+}
+
+.verdict.unknown {
+  background: var(--bg);
+  color: var(--muted);
+  border: 1px solid var(--border);
+}
+
+.result-body {
+  padding: 1.25rem;
+}
+
+.result-section {
+  margin-bottom: 1rem;
+}
+
+.result-section:last-child { margin-bottom: 0; }
+
+.result-section h3 {
+  font-size: .6875rem;
+  font-weight: 700;
+  text-transform: uppercase;
+  letter-spacing: .06em;
+  color: var(--muted);
+  margin-bottom: .375rem;
+}
+
+.result-section p {
+  font-size: .9375rem;
+  line-height: 1.5;
+}
+
+.result-section .mono {
+  font-family: var(--mono);
+  font-size: .875rem;
+}
+
+.block-list {
+  display: flex;
+  flex-wrap: wrap;
+  gap: .375rem;
+}
+
+.block-badge {
+  font-size: .75rem;
+  font-weight: 600;
+  padding: .1875rem .5rem;
+  border-radius: 4px;
+  background: var(--bad-bg);
+  color: var(--bad);
+  border: 1px solid var(--bad-border);
+}
+
+.block-badge.clean {
+  background: var(--ok-bg);
+  color: var(--ok);
+  border: 1px solid var(--ok-border);
+}
+
+/* ── Trait badges ─────────────────────────────────────────── */
+.trait-badge {
+  font-size: .75rem;
+  font-weight: 600;
+  padding: .1875rem .5rem;
+  border-radius: 4px;
+  background: var(--bg);
+  color: var(--muted);
+  border: 1px solid var(--border);
+}
+
+.trait-badge.anycast {
+  background: #eff6ff;
+  color: #3b82f6;
+  border-color: #93c5fd;
+}
+
+.trait-badge.anonymous {
+  background: #fef3c7;
+  color: #d97706;
+  border-color: #fcd34d;
+}
+
+.trait-badge.satellite {
+  background: #f3e8ff;
+  color: #7c3aed;
+  border-color: #c4b5fd;
+}
+
+.trait-badge.eu {
+  background: #dbeafe;
+  color: #2563eb;
+  border-color: #93c5fd;
+}
+
+@media (prefers-color-scheme: dark) {
+  .trait-badge.anycast {
+    background: #1e3a5f;
+    color: #60a5fa;
+    border-color: #1e40af;
+  }
+  .trait-badge.anonymous {
+    background: #451a03;
+    color: #fbbf24;
+    border-color: #92400e;
+  }
+  .trait-badge.satellite {
+    background: #3b0764;
+    color: #a78bfa;
+    border-color: #581c87;
+  }
+  .trait-badge.eu {
+    background: #1e3a5f;
+    color: #60a5fa;
+    border-color: #1e40af;
+  }
+}
+
+/* ── Loading spinner ──────────────────────────────────────── */
+.loading {
+  display: none;
+  text-align: center;
+  padding: 2rem;
+  color: var(--muted);
+  font-size: .875rem;
+}
+
+.loading.visible { display: block; }
+
+.spinner {
+  display: inline-block;
+  width: 1.25rem;
+  height: 1.25rem;
+  border: 2px solid var(--border);
+  border-top-color: var(--primary);
+  border-radius: 50%;
+  animation: spin .6s linear infinite;
+  vertical-align: middle;
+  margin-right: .5rem;
+}
+
+@keyframes spin { to { transform: rotate(360deg); } }
+
+/* ── Error ────────────────────────────────────────────────── */
+.error-msg {
+  display: none;
+  background: var(--bad-bg);
+  color: var(--bad);
+  border: 1px solid var(--bad-border);
+  border-radius: var(--radius);
+  padding: .75rem 1rem;
+  margin-bottom: 1.5rem;
+  font-size: .875rem;
+}
+
+.error-msg.visible { display: block; }
+
+/* ── My IP link ───────────────────────────────────────────── */
+.my-ip-link {
+  display: inline-block;
+  margin-bottom: 1.5rem;
+  font-size: .875rem;
+  color: var(--primary);
+  text-decoration: underline;
+  text-decoration-color: transparent;
+  text-underline-offset: 2px;
+  cursor: pointer;
+  transition: text-decoration-color .15s;
+}
+
+.my-ip-link:hover { text-decoration-color: var(--primary); }
+
+/* ── Footer ───────────────────────────────────────────────── */
+footer {
+  margin-top: 2rem;
+  font-size: .75rem;
+  color: var(--muted);
+  text-align: center;
+}
+
+footer a { color: var(--primary); text-decoration: none; }
+footer a:hover { text-decoration: underline; }

go.sum

@@ -0,0 +1,8 @@
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
+golang.org/x/sys v0.44.0 h1:ildZl3J4uzeKP07r2F++Op7E9B29JRUy+a27EibtBTQ=
+golang.org/x/sys v0.44.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+golang.org/x/term v0.43.0 h1:S4RLU2sB31O/NCl+zFN9Aru9A/Cq2aqKpTZJ6B+DwT4=
+golang.org/x/term v0.43.0/go.mod h1:lrhlHNdQJHO+1qVYiHfFKVuVioJIheAc3fBSMFYEIsk=
+golang.org/x/time v0.15.0 h1:bbrp8t3bGUeFOx08pvsMYRTCVSMk89u4tKbNOZbp88U=
+golang.org/x/time v0.15.0/go.mod h1:Y4YMaQmXwGQZoFaVFk4YpCt4FLQMYKZe9oeV/f4MSno=

net/geoip/databases.go

@@ -105,12 +105,41 @@ func (d *Databases) Close() error {
 
 // Info is the structured result of a GeoIP lookup.
 type Info struct {
-	City       string `json:"city,omitempty"`
+	City              string   `json:"city,omitempty"`
-	Region     string `json:"region,omitempty"`
+	Region            string   `json:"region,omitempty"`
-	Country    string `json:"country,omitempty"`
+	RegionISO         string   `json:"region_iso,omitempty"`
-	CountryISO string `json:"country_iso,omitempty"`
+	Country           string   `json:"country,omitempty"`
-	ASN        uint   `json:"asn,omitzero"`
+	CountryISO        string   `json:"country_iso,omitempty"`
-	ASNOrg     string `json:"asn_org,omitempty"`
+	CountryInEU       bool     `json:"country_in_eu,omitzero"`
+	RegisteredCountry string   `json:"registered_country,omitempty"`
+	RegisteredCountryISO string `json:"registered_country_iso,omitempty"`
+	PostalCode        string   `json:"postal_code,omitempty"`
+	Continent         string   `json:"continent,omitempty"`
+	ContinentCode     string   `json:"continent_code,omitempty"`
+	Timezone          string   `json:"timezone,omitempty"`
+	Latitude          float64  `json:"latitude,omitzero"`
+	Longitude         float64  `json:"longitude,omitzero"`
+	MetroCode         uint     `json:"metro_code,omitzero"`
+	AccuracyRadius    uint16   `json:"accuracy_radius,omitzero"`
+	ASN               uint     `json:"asn,omitzero"`
+	ASNOrg            string   `json:"asn_org,omitempty"`
+	Anycast           bool     `json:"anycast,omitzero"`
+	AnonymousProxy    bool     `json:"anonymous_proxy,omitzero"`
+	Satellite         bool     `json:"satellite,omitzero"`
+}
+
+// LookupRaw returns the raw maxmind record for ip. Returns nil on
+// unparseable IP or database miss.
+func (d *Databases) LookupRaw(ip string) *geoip2.City {
+	addr, err := netip.ParseAddr(ip)
+	if err != nil {
+		return nil
+	}
+	rec, err := d.City.City(addr.AsSlice())
+	if err != nil {
+		return nil
+	}
+	return rec
 }
 
 // Lookup returns city + ASN info for ip. Returns a zero Info on unparseable
@@ -127,11 +156,38 @@ func (d *Databases) Lookup(ip string) Info {
 		info.City = rec.City.Names["en"]
 		info.Country = rec.Country.Names["en"]
 		info.CountryISO = rec.Country.IsoCode
+		info.CountryInEU = rec.Country.IsInEuropeanUnion
+		if rec.RegisteredCountry.IsoCode != "" {
+			info.RegisteredCountry = rec.RegisteredCountry.Names["en"]
+			info.RegisteredCountryISO = rec.RegisteredCountry.IsoCode
+		}
 		if len(rec.Subdivisions) > 0 {
 			if sub := rec.Subdivisions[0].Names["en"]; sub != "" && sub != info.City {
 				info.Region = sub
 			}
+			info.RegionISO = rec.Subdivisions[0].IsoCode
 		}
+		if rec.Postal.Code != "" {
+			info.PostalCode = rec.Postal.Code
+		}
+		if rec.Continent.Names["en"] != "" {
+			info.Continent = rec.Continent.Names["en"]
+			info.ContinentCode = rec.Continent.Code
+		}
+		if rec.Location.TimeZone != "" {
+			info.Timezone = rec.Location.TimeZone
+		}
+		if rec.Location.Latitude != 0 {
+			info.Latitude = rec.Location.Latitude
+		}
+		if rec.Location.Longitude != 0 {
+			info.Longitude = rec.Location.Longitude
+		}
+		info.MetroCode = rec.Location.MetroCode
+		info.AccuracyRadius = rec.Location.AccuracyRadius
+		info.Anycast = rec.Traits.IsAnycast
+		info.AnonymousProxy = rec.Traits.IsAnonymousProxy
+		info.Satellite = rec.Traits.IsSatelliteProvider
 	}
 	if rec, err := d.ASN.ASN(stdIP); err == nil {
 		info.ASN = rec.AutonomousSystemNumber