Reports / go.dev

go.dev

Generated Refresh data

We found 29 subdomains of go.dev in certificate transparency logs, passive DNS and DNS brute force; 23 resolve right now, including admin.go.dev, blog.go.dev and dev.go.dev. go.dev is registered with MarkMonitor Inc. since 2019-02-13 and expires 2027-02-13. Its SSL certificate from Google Trust Services expires in 73 days. For email it has no SPF record, no DMARC record and no DKIM key on the common selectors we check.

Registration
MarkMonitor Inc.Since 2019-02-13 · expires 2027-02-13
SSL certificate
73 days leftGoogle Trust Services
Subdomains
23 live29 discovered in total
Email authentication
None foundNo DMARC record

DNS records

7 of 7 types
A4
  • 216.239.34.21
  • 216.239.38.21
  • 216.239.32.21
  • 216.239.36.21
AAAA4
  • 2001:4860:4802:34::15
  • 2001:4860:4802:36::15
  • 2001:4860:4802:32::15
  • 2001:4860:4802:38::15
MX5
  • 1 aspmx.l.google.com.
  • 10 alt4.aspmx.l.google.com.
  • 5 alt2.aspmx.l.google.com.
  • 5 alt1.aspmx.l.google.com.
  • 10 alt3.aspmx.l.google.com.
TXT5
  • "google-site-verification=3oHHTSOKrjE9J8SIvyj3gUxEtDjmr5oNZ-DbB271vpM"
  • "google-site-verification=eYE-BIP9BY8VZCUI_r8sJi7qjRVtxyRQSlbZmeVVlzE"
  • "google-site-verification=eqtrduRyMRS8TuoUEuYMF-u9_IDRMd1In6T6E1gTchU"
  • "google-site-verification=mJdpiJi2GyNG9nz7sctCXgJnzDHzdFzfhOqTTDuMR0s"
  • "google-site-verification=qvibgBDBD_1VeFXvgduqw1cmDeMpAS_qBCZCFauYduk"
NS4
  • ns-cloud-e3.googledomains.com.
  • ns-cloud-e4.googledomains.com.
  • ns-cloud-e2.googledomains.com.
  • ns-cloud-e1.googledomains.com.
CAA2
  • 0 issue "pki.goog"
  • 0 issue "letsencrypt.org"
SOA1
  • ns-cloud-e1.googledomains.com. cloud-dns-hostmaster.google.com. 1 21600 3600 259200 300

Live lookup, cached up to 5 min.

WHOIS / RDAP

via rdap.org
Registrar
MarkMonitor Inc.
Registered
2019-02-13
Expires
2027-02-13
Last updated
2026-01-17
Registry 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

RDAP with port-43 WHOIS fallback, cached up to 1 h.

SSL certificate

Valid, 73 days left
Issuer
Google Trust ServicesCN=WR3,O=Google Trust Services,C=US
Subject
go.dev
Valid from
2026-09-21 05:40 UTC
Valid until
2026-12-20 06:28 UTC
Serial number
238578384814783499045452010096165574754
Names covered (1)
go.dev

Live TLS handshake on port 443, cached up to 6 h.

Subdomains

23 live · 29 discovered
  • admin.go.dev172.253.122.121
  • beta.pkg.go.dev34.117.180.159
  • blog.go.dev172.253.124.121
  • dev-pkg.go.dev34.102.154.129
  • dev-telemetry-worker.go.dev34.36.103.92
  • dev-telemetry.go.dev35.190.72.87
  • dev-worker.go.dev35.186.245.16
  • dev.go.dev142.250.31.121
  • ecosystem.go.dev34.111.254.231
  • exp-worker.go.dev130.211.18.196
  • go.dev216.239.32.21
  • learn.go.dev192.178.155.121
  • pkg.go.dev34.149.140.181
  • play.go.dev142.251.179.121
  • prod-worker.go.dev34.120.249.233
  • staging-learn.go.dev142.251.179.121
  • staging-pkg.go.dev34.117.157.246
  • staging-worker.go.dev34.120.230.151
  • staging.go.dev172.253.124.121
  • talks.go.dev172.253.124.121
  • telemetry.go.dev34.149.96.102
  • tour.go.devghs.googlehosted.com
  • vuln.go.dev34.117.213.18
6 more seen in CT logs and passive DNS that don't resolve now
  • dev-prober.go.dev
  • docs.go.dev
  • pgk.go.dev
  • staging-prober.go.dev
  • telemetry-worker.go.dev
  • www.go.dev
Sources: virustotal 29 · certspotter 20

From CT logs, passive DNS (25+ sources) and brute-force. Live means it resolves now.

SPF Missing
No SPF record found.
DMARC Missing
No DMARC record found.
DKIM None found
No key on the common selectors.

DKIM checked on 29 common selectors; custom ones can't be discovered. Cached up to 1 h.

Got an email from go.dev asking you to change bank details? Check it before you pay

Get this report as JSON

One call returns everything on this page. Each section is also its own endpoint.

curl "https://domain-intelligence-api.p.rapidapi.com/lookup/go.dev" \
  -H "X-RapidAPI-Host: domain-intelligence-api.p.rapidapi.com" \
  -H "X-RapidAPI-Key: YOUR_RAPIDAPI_KEY"
1,000 requests a month free, no card Paid plans up to 5M a month ?wait=1 waits for every subdomain source to finish

More reports