Registered 28 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 86 ms.
Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

| A | 3.128.8.29 3.13.112.100 |
|---|---|
| MX | 5 alt2.aspmx.l.google.com 5 alt1.aspmx.l.google.com 10 alt4.aspmx.l.google.com 10 alt3.aspmx.l.google.com 1 aspmx.l.google.com |
| NS | ns-1285.awsdns-32.org ns-783.awsdns-33.net ns-2008.awsdns-59.co.uk ns-493.awsdns-61.com |
| TXT | google-site-verification=Xt1q2fpVK6qREDXADvlLz2O5pvmUz9G_xxoGdeEnrH0 facebook-domain-verification=qptjyerza2q11uv3fe6aay6hbsncr8 google-site-verification=HdFEloOqFNJZvQWa7SK2BRmWVt8aVnPuagqXZ-C2U5U google-site-verification=OtVm0j4Rqs4y10N827uQ_n8ZnMtO0vfqw1k5NCzaJvo yahoo-verification-key=bP+HO9s82IBxbotbnF/O1nN4Jo4VfFXq5JNFAPCK8+o= google-site-verification=XuFuLW59WRoAbzeQ-wsF0JwpaeYwtdzRmtiktfi3Pmc loaderio=2fd6086b1c3ba926ae36db37131123f7 v=spf1 include:_u.arstechnica.com._spf.smart.ondmarc.com ~all google-site-verification=nso4GHYIGZwo4gB6AoUxzJWkxOUdx83kbGeREAxnv3A |
| registrar | CSC Corporate Domains, Inc. |
|---|---|
| registered | 1998-12-30 |
| expires | 2027-12-30 |
| last changed | 2026-06-09 |
| owner | Advance Magazine Publishers Inc. |
| nameservers | ns-1285.awsdns-32.org ns-2008.awsdns-59.co.uk ns-493.awsdns-61.com ns-783.awsdns-33.net |
| status | client transfer prohibited server delete prohibited server transfer prohibited server update prohibited |
| valid | yes |
|---|---|
| issuer | Amazon |
| covers | *.arstechnica.com, arstechnica.com |
| protocol | TLSv1.2 |
Domain is not signed with DNSSEC
| SPF | pass v=spf1 include:_u.arstechnica.com._spf.smart.ondmarc.com ~all |
|---|---|
| DMARC | pass policy reject |
| DKIM | found: google |
Whether mail claiming to be from this domain can be checked as genuine.
Green: clean. Red: listed. Grey: the list did not answer.
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.
MCP: add https://how.is/mcp to Claude, Codex or Cursor
(one-line install) and ask for domain_trust on arstechnica.com.
Reference: /llms.txt.
IPv6. Does arstechnica.com work over IPv6? See the live check on aaaa.bot — website, mail and nameservers, graded A–F.
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