Domain Intelligence Report

go.dev

DNS records, WHOIS/RDAP registration, SSL certificate, subdomain enumeration, and email-security posture — aggregated in real time and cached.

7
DNS record types
54d
SSL cert remaining
4
Subdomains found
—
Email security
DNS

DNS Records

All record types resolved from authoritative DNS for go.dev.

A 4 records
  • 216.239.34.21
  • 216.239.38.21
  • 216.239.32.21
  • 216.239.36.21
AAAA 4 records
  • 2001:4860:4802:36::15
  • 2001:4860:4802:38::15
  • 2001:4860:4802:32::15
  • 2001:4860:4802:34::15
MX 5 records
  • 1 aspmx.l.google.com.
  • 10 alt4.aspmx.l.google.com.
  • 5 alt1.aspmx.l.google.com.
  • 10 alt3.aspmx.l.google.com.
  • 5 alt2.aspmx.l.google.com.
TXT 5 records
  • "google-site-verification=qvibgBDBD_1VeFXvgduqw1cmDeMpAS_qBCZCFauYduk"
  • "google-site-verification=mJdpiJi2GyNG9nz7sctCXgJnzDHzdFzfhOqTTDuMR0s"
  • "google-site-verification=3oHHTSOKrjE9J8SIvyj3gUxEtDjmr5oNZ-DbB271vpM"
  • "google-site-verification=eYE-BIP9BY8VZCUI_r8sJi7qjRVtxyRQSlbZmeVVlzE"
  • "google-site-verification=eqtrduRyMRS8TuoUEuYMF-u9_IDRMd1In6T6E1gTchU"
NS 4 records
  • ns-cloud-e1.googledomains.com.
  • ns-cloud-e4.googledomains.com.
  • ns-cloud-e3.googledomains.com.
  • ns-cloud-e2.googledomains.com.
CAA 2 records
  • 0 issue "letsencrypt.org"
  • 0 issue "pki.goog"
SOA 1 record
  • ns-cloud-e1.googledomains.com. cloud-dns-hostmaster.google.com. 1 21600 3600 259200 300
Registration

WHOIS / RDAP

Registration data for go.dev via the RDAP protocol, with port-43 WHOIS fallback if RDAP is unavailable.

whois via iana-bootstrap:https://pubapi.registry.google/rdap/
Registrar
MarkMonitor Inc.
Created
2019-02-13T16:28:35.767Z
Updated
2026-01-17T10:26:49.100Z
Expires
2027-02-13T16:28:35.767Z
Handle
31A7CAC1B-DEV
Nameservers
ns-cloud-e1.googledomains.comns-cloud-e2.googledomains.comns-cloud-e3.googledomains.comns-cloud-e4.googledomains.com
Status
client delete prohibitedclient transfer prohibitedclient update prohibited
TLS

SSL Certificate

Live TLS handshake against go.dev. No third-party scanner.

ssl 54 days remaining
Issuer
CN=WR3,O=Google Trust Services,C=US
Subject
CN=go.dev
Valid from
2026-04-08T09:35:15+00:00
Valid to
2026-07-07T10:25:45+00:00
Serial
42445509143365540876272029900183661360
SANs (1)
go.dev
Reconnaissance

Subdomains discovered

Aggregated from Certificate Transparency logs (crt.sh, certspotter, hackertarget) with DNS bruteforce fallback if all CT sources fail.

⚠ Partial results — crt.sh status 429 · certspotter rate-limited · hackertarget limited: API count exceeded - Increase Quota with Membership
subdomains 4 found
crt.sh status 429 certspotter rate-limited hackertarget limited: API count exceeded - Increase Quota with Membership dns-brute ok +4 (wordlist 54)
  • admin.go.dev
  • blog.go.dev
  • dev.go.dev
  • staging.go.dev
Email

Email Security Posture

SPF and DMARC presence and records for go.dev. DKIM requires a known selector and is not auto-discoverable.

SPF missing
DMARC missing
DKIM selector required

DKIM requires selector; not auto-discoverable

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