HOW.IS
?

How is postgresql.org?

Looks fine risk 0/100

Registered 30 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 862 ms.

Why

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

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

How postgresql.org looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
862 ms · ends at www.postgresql.org
HTTPS
61 d
left on a Let's Encrypt certificate
Age
30 years
registered 1996-10-22
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records6 record types
A217.196.149.50
AAAA2a02:16a8:dc51::50
MX10 makus.postgresql.org
10 magus.postgresql.org
NSns4.postgresql.org
ns1.postgresql.org
ns2.postgresql.org
ns3.postgresql.org
TXTlibera-BVY4G2rs94vmQBA94rNesqCh
google-site-verification=aJB1lOnlG5TA0HgpZU-iKIQD6qPMWqUnkzanzern8eU
v=spf1 include:_spf.postgresql.org ~all
CAA{'type': 'CAA', 'issue': 'amazontrust.com', 'critical': 0}
{'type': 'CAA', 'iodef': 'mailto:hostmaster@postgresql.org', 'critical': 0}
{'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0}
RegistrationGandi SAS
registrarGandi SAS
registered1996-10-22
expires2029-10-21
last changed2026-08-12
ownerPostgreSQL Community Association of Canada
nameserversns1.postgresql.org
ns2.postgresql.org
ns3.postgresql.org
ns4.postgresql.org
statusclient transfer prohibited
registered 1996-10-22expires 2029-10-21
HTTPS certificate61 days left
validyes
issuerLet's Encrypt
coversarchives.postgresql.org, postgresql.org, stackbuilder.postgresql.org, www.postgresql.org, zalkon.postgresql.org
protocolTLSv1.3
issued 2026-10-01expires 2026-12-30
DNSSECsecure

Domain is properly signed — chain validated by an independent validating resolver

. → org → postgresql.org
Email authenticationfair
SPFpass v=spf1 include:_spf.postgresql.org ~all
DMARCwarning policy none
DKIMnone of 1 common selectors

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

Security scoregrade B · 168/205
Basic Security
10/40missing: DNSSEC Enabled, Nameserver Diversity
Record Security
38/45missing: DMARC Record, DKIM Presence
Advanced Security
25/25
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 5 lookups
SURBL MultidomainURIBL MultidomainSpamCop217.196.149.50Barracuda217.196.149.50UCEPROTECT Level 1217.196.149.50

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=postgresql.org" \ -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=postgresql.org"

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

Watch postgresql.org. 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