go.dev
Aggregated from public BGP, CT logs, our scan layer, honeypots and global probes.
Run a live full scan of go.dev
On-demand: ports, banners, TLS, tech-stack, subdomains and origin/IP-leak detection. Results are shared publicly for everyone to link to.
DNS Records
WHOIS / Registration
Registration data planned
Registrar, creation/expiry dates and domain status via RDAP. Rolling out gradually — bulk WHOIS is rate-limited, so we resolve on a prioritized cadence.
Subdomains
Every subdomain we know about — harvested from CT-log SANs, scan-observed certs and HTML body references — paired with its current A/AAAA target.
| Subdomain | Resolves to | Last seen |
|---|---|---|
| learn.go.dev | 2026-07-23 17:01:04.707 | |
| go.dev | 2026-07-28 20:14:18.483 | |
| pkg.go.dev | 2026-07-28 19:02:52.609 | |
| play.go.dev | 2026-06-23 09:11:22.952 | |
| staging-pkg.go.dev | 2026-07-26 07:27:11.595 | |
| dev-pkg.go.dev | 1970-01-01 00:00:00.000 | |
| dev-worker.go.dev | 2026-07-19 15:44:49.207 | |
| prod-worker.go.dev | 2026-07-21 13:46:25.471 | |
| staging-worker.go.dev | 1970-01-01 00:00:00.000 | |
| telemetry.go.dev | 1970-01-01 00:00:00.000 | |
| vuln.go.dev | 2026-06-19 18:55:17.262 |
Tech Stack
Tech detection pending
Wappalyzer-rules detect CMS, frameworks, analytics, JS libs and server-side languages on this domain.
TLS Certificates
Certificate observations pending
TLS certs naming this domain in subject or SANs will appear here as our scan-layer catches them.
IPs Citing This Domain
Hosts whose HTML body references this domain. Strong signal for origin/mirror/embed discovery.
Origin / IP-Leak
When a hostname is served behind a CDN (e.g. Cloudflare), the origin server can sometimes be identified by matching its TLS cert against the protected hostname. Findings shown here are heuristic candidates, not guarantees.
No origin-IP leaks detected (yet)
Either this domain doesn't sit behind a CDN, or we haven't seen a TLS cert from a non-CDN IP matching this hostname. Run a fullscan to refresh the cert→IP cross-reference.
Threat Intelligence
Domain threat-intel pending
Matches in URLhaus, OpenPhish, PhishTank, malware feeds, and Spamhaus DBL.
History
Passive DNS — every value this name ever resolved to and when we first / last observed it. Updates every cycle of our forward-DNS crawler.
| Type | Value | First seen | Last seen |
|---|---|---|---|
| A | 216.239.36.21 | 2026-05-25 21:56:50.553 | 2026-07-28 20:14:18.483 |
| A | 216.239.34.21 | 2026-05-25 21:56:50.553 | 2026-07-28 20:14:18.483 |
| AAAA | 2001:4860:4802:38::15 | 2026-05-25 21:56:50.553 | 2026-07-28 20:14:18.483 |
| AAAA | 2001:4860:4802:36::15 | 2026-05-25 21:56:50.553 | 2026-07-28 20:14:18.483 |
| A | 216.239.38.21 | 2026-05-25 21:56:50.553 | 2026-07-28 20:14:18.483 |
| AAAA | 2001:4860:4802:32::15 | 2026-05-25 21:56:50.553 | 2026-07-28 20:14:18.483 |
| A | 216.239.32.21 | 2026-05-25 21:56:50.553 | 2026-07-28 20:14:18.483 |
| AAAA | 2001:4860:4802:34::15 | 2026-05-25 21:56:50.553 | 2026-07-28 20:14:18.483 |
| MX | 5 alt2.aspmx.l.google.com | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |
| NS | ns-cloud-e4.googledomains.com | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |
| NS | ns-cloud-e1.googledomains.com | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |
| CAA | 0 issue "pki.goog" | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |
| TXT | google-site-verification=3oHHTSOKrjE9J8SIvyj3gUxEtDjmr5oNZ-DbB271vpM | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |
| MX | 10 alt4.aspmx.l.google.com | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |
| MX | 1 aspmx.l.google.com | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |
| TXT | google-site-verification=qvibgBDBD_1VeFXvgduqw1cmDeMpAS_qBCZCFauYduk | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |
| MX | 5 alt1.aspmx.l.google.com | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |
| NS | ns-cloud-e2.googledomains.com | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |
| TXT | google-site-verification=eqtrduRyMRS8TuoUEuYMF-u9_IDRMd1In6T6E1gTchU | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |
| MX | 10 alt3.aspmx.l.google.com | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |
| NS | ns-cloud-e3.googledomains.com | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |
| CAA | 0 issue "letsencrypt.org" | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |
| TXT | google-site-verification=mJdpiJi2GyNG9nz7sctCXgJnzDHzdFzfhOqTTDuMR0s | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |
| TXT | google-site-verification=eYE-BIP9BY8VZCUI_r8sJi7qjRVtxyRQSlbZmeVVlzE | 2026-05-26 00:03:35.658 | 2026-07-28 20:14:18.483 |