HOW.IS
?

How is g.co?

Looks fine risk 0/100

Registered 17 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 58 ms.

Why

02050100
finecarefulhigh risk
  • ·Nothing in the checks added risk.

Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

How g.co looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
58 ms
HTTPS
54 d
left on a Google Trust Services certificate
Age
17 years
registered 2010-04-26
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records5 record types
A64.233.180.100
64.233.180.101
64.233.180.139
64.233.180.138
64.233.180.113
64.233.180.102
AAAA2607:f8b0:4004:c21::71
2607:f8b0:4004:c21::66
2607:f8b0:4004:c21::8b
2607:f8b0:4004:c21::8a
NSns3.google.com
ns1.google.com
ns2.google.com
ns4.google.com
TXTfacebook-domain-verification=uaginhz5vhf6ac0jdcja536qidzm35
v=spf1 -all
CAA{'type': 'CAA', 'issue': 'pki.goog', 'critical': 0}
RegistrationMarkmonitor Inc.
registrarMarkmonitor Inc.
registered2010-04-26
last changed2026-03-24
ownerREDACTED FOR PRIVACY
countryUS
nameserversns1.google.com ns2.google.com ns3.google.com ns4.google.com
statusclientUpdateProhibited clientTransferProhibited clientDeleteProhibited
HTTPS certificate54 days left
validyes
issuerGoogle Trust Services
covers*.google.com, *.appengine.google.com, *.bdn.dev, *.origin-test.bdn.dev, *.cloud.google.com, *.crowdsource.google.com, *.datacompute.google.com, *.google.ca, *.google.cl, *.google.co.in, *.google.co.jp, *.google.co.uk
protocolTLSv1.3
issued 2026-09-28expires 2026-12-21
DNSSECinsecure

Domain is not signed with DNSSEC

. → co → g.co
Email authenticationfair
SPFpass v=spf1 -all
DMARCpass policy reject
DKIMnone of 1 common selectors

Whether mail claiming to be from this domain can be checked as genuine.

Security scoregrade B · 160/205
Basic Security
10/40missing: DNSSEC Enabled, Nameserver Diversity
Record Security
45/45missing: DKIM Presence
Advanced Security
10/25missing: Mail Server Configuration, SOA Record Configuration
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 17 lookups
SURBL MultidomainURIBL MultidomainSpamCop142.251.163.113Barracuda142.251.163.113UCEPROTECT Level 1142.251.163.113SpamCop142.251.163.139Barracuda142.251.163.139UCEPROTECT Level 1142.251.163.139SpamCop142.251.163.100Barracuda142.251.163.100UCEPROTECT Level 1142.251.163.100SpamCop142.251.163.138Barracuda142.251.163.138UCEPROTECT Level 1142.251.163.138SpamCop142.251.163.102Barracuda142.251.163.102UCEPROTECT Level 1142.251.163.102

Green: clean. Red: listed. Grey: the list did not answer.

Ask it yourself

Agents get this as data. Bought through the API, the checks behind this page cost $0.070: profile $0.025 + trust $0.020 + screenshot $0.020 + site status $0.005.

curl "https://how.is/v1/domain/trust?domain=g.co" \ -H "Authorization: Bearer $HOWIS_KEY" # or pay per call in USDC (x402), no key: the 402 tells your agent the price curl -i "https://how.is/v1/domain/profile?domain=g.co"

MCP: add https://how.is/mcp to Claude, Codex or Cursor (one-line install) and ask for domain_trust on g.co. Reference: /llms.txt.

Watch g.co. DNS read at the source every 5 minutes; certificate, blocklists and expiry every 6 hours. You get an email only when something changes.

Watch — $1 / 30 days