HOW.IS
?

How is spamhaus.org?

Looks fine risk 0/100

Registered 27 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 369 ms.

Why

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

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

How spamhaus.org looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
369 ms · ends at www.spamhaus.org
HTTPS
49 d
left on a Let's Encrypt certificate
Age
27 years
registered 1999-10-01
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records5 record types
A3.126.246.180
AAAA2a05:d014:1bf:db01:bbc8:62e2:948e:6bf4
MX5 mx.spamhaus.org
10 bmx.spamhaus.org
NShideyoshi.spamhaus.org
musashi.spamhaus.com
musashi.spamhaus.org
hideyoshi.spamhaus.net
musashi.spamhaus.net
hideyoshi.spamhaus.com
TXTslack-domain-verification=YLhI1OY5lOIO75tQnemqnegUtxMkkFPIOSnhP9oz
google-site-verification=S_wfCx1OL3MRNNMV9hlV1-tcYdHzi8uqXzjmXsUm__Q
anthropic-domain-verification-djxwa1=nExEXAdTLFWnqNPqhfLILYjtW
google-site-verification=rx-daAwN7NKrLdzxxMx5V28NJYkeWoLq8nI6HTkTZlU
google-site-verification=ArGbH7oaY0zd8VI-m65C1LC4VupIggMLrjTAom0xAmE
google-site-verification=JgpYTmGhSc1tj_jxwflGwO8TB-3qL0X55ZvzzJ2qgQE
ZOOM_verify_waexEmZ2Sa-NZVWD5Eq9gA
v=spf1 a:mail-out.spamhaus.org a:mail-out1.spamhaus.org a:mail-out2.spamhaus.org ~all
RegistrationNom-iq Ltd. dba COM LAUDE
registrarNom-iq Ltd. dba COM LAUDE
registered1999-10-01
expires2027-10-01
last changed2026-09-06
nameservershideyoshi.spamhaus.org
musashi.spamhaus.org
hideyoshi.spamhaus.com
hideyoshi.spamhaus.net
musashi.spamhaus.com
musashi.spamhaus.net
statusclient delete prohibited
server delete prohibited
client transfer prohibited
server transfer prohibited
client update prohibited
server update prohibited
registered 1999-10-01expires 2027-10-01
HTTPS certificate49 days left
validyes
issuerLet's Encrypt
coversspamhaus.org
protocolTLSv1.3
issued 2026-09-18expires 2026-12-17
DNSSECinsecure

Domain is not signed with DNSSEC

. → org → spamhaus.org
Email authenticationgood
SPFpass v=spf1 a:mail-out.spamhaus.org a:mail-out1.spamhaus.org a:mail-out2.spamhaus.org ~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 · 170/205
Basic Security
20/40missing: DNSSEC Enabled
Record Security
30/45missing: CAA Records, DKIM Presence
Advanced Security
25/25
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 5 lookups
SURBL MultidomainURIBL MultidomainSpamCop3.126.246.180Barracuda3.126.246.180UCEPROTECT Level 13.126.246.180

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=spamhaus.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=spamhaus.org"

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

Watch spamhaus.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