On no blocklists we checked, valid HTTPS, the site answered 200 in 1891 ms.
Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

| A | 156.110.247.18 |
|---|---|
| MX | 10 mxa-00272701.gslb.pphosted.com 10 mxb-00272701.gslb.pphosted.com |
| NS | ns-937.awsdns-53.net ns-1598.awsdns-07.co.uk ns-472.awsdns-59.com ns-1284.awsdns-32.org |
| TXT | 00D6g000007Nb7g=1TBQl00000003if 19b2wwr3n8zyh5ppcyqgc2n9pwszbvch 4ebp5mps69vnmnnm00pq3ak046 00D460000015hop=1TBS6000000043d e2ma-verification=xrhbb google-site-verification=B1XtiPZn3KBonENNqC3PRDjD5AlcbiA3syfJY2R1RlA knowbe4-site-verification=c5d493be36393b1b48e67e6d904010e2 vc-domain-verify=offcampushousing.ou.edu,8422f6bf6a7e9e548760 onetrust-domain-verification=ed5aafe61b1a42deb87c19be18cfd4c2 adobe-idp-site-verification=6ba3e6ad-d322-435f-b2ea-efa73549fd04 v=spf1 include:spf.protection.outlook.com include:_tuf-spf.touchnet.com include:_spf.qualtrics.com include:aspmx.pardot.com include:servers.mcsv.net include:mail.zendesk.com ip4:67.231.145.144 include:sendgrid.net ip4:168.245.25.116 ip4:129.15.109.42 ip4:148.59.100.16/28 ip4:129.15.42.13 ip4:52.86.188.131 ip4:54.236.128.150 ip4:54.236.109.30 ip4:64.72.147.142 ip4:208.86.201.61 ip4:216.37.17.227 ip4:64.72.147.23 ip4:35.80.141.6 ip4:44.229.121.55 ip4:148.59.100.16/28 ~all docusign=8de025f0-7002-4f33-81c9-b99876e9dd6f dell-technologies-domain-verification=ou.edu_f4eb63d7-ca68-4b9c-8886-aed9c0d2a464_1778443049 208.75.123.0/24 00D41000000fufz=1TBPQ00000003kH autodesk-domain-verification=N4NfpymhDwdHr4XMV8FB 00D5f000001yseS=1TBUw00000005hF 00Dd0000000h1IL=1TBRi0000000SsL +zWEfgkvA2j9fHHBKPVE4qyt9uyD85oFlNynjfase5hvZlAnYbCXGlpU3uw/YWjw29sso+Ld9IUjDBQhveBwYA== pardot_139971_*=262d8f2660b45fe1196819eb9ca51f259fa772e1c40148014eda80bfb1a37c21 LCTr/F0hImTjsnYw6pt9Jg6TWBOcfqK+3qeJYgsQ+bpkyiTfaix8+0YKXRV/VTHUIt2BZtBnra+Eza6GVKPohg== apple-domain-verification=K0MYiQ2cpU5b71eM ZOOM_verify_6gDEToiHTCmY38NbmZzkzA 00D8c0000017HgV=1TBVR0000000A93 D1FA33B743B20CDDDBB9AF8624EE2355 amazonses:6a65aisx1XSyBKQ17qrGnQGvL0ZCs9I5Rq9LME9rqWY= google-site-verification=EMTIg5uKXGXbCBa5000kcqYhYMkZbHKDuyyCAZZqX38 infoblox-domain-mastery=67f7995c22bb4be1835f541279da44c14afc894a3485c4132ad3b48b3826ada41b cisco-ci-domain-verification=2e8593a1e97e6ee3e9e53c4192da8d2fc3c38fff45292480c92fed85bb98f451 00DHr0000017Fw8=1TBUs00000007GK docusign=05e90101-723f-479f-af27-de27e85d8f98 google-site-verification=CwnZt6h1EGhM5plVrZK_z1eon4GyVpPVIKax5cpcFd4 MS=ms47553681 00D5e000001MWEN=1TBVV00000004Jl beam-verification=tO9eASrtnwOX0k5Pt87mwtRwTJPncRbHQznFi2MbavFkVccZ b2tsYWhvbWE= google-site-verification=Ta7bq2QHLFrKjjFUjdm4DXkV8K3wN56S5mdMEY5CwO8 AppID=0000000048019867 MS=ms95193120 |
| valid | yes |
|---|---|
| issuer | Internet2 |
| covers | ou.edu, *.ou.edu |
| protocol | TLSv1.2 |
Domain is not signed with DNSSEC
| SPF | pass v=spf1 include:spf.protection.outlook.com include:_tuf-spf.touchnet.com include:_spf.qualtrics.com include:aspmx.pardot.com include:servers.mcsv.net include:mail.zendesk.com ip4:67.231.145.144 include:sendgrid.net ip4:168.245.25.116 ip4:129.15.109.42 ip4:148.59.100.16/28 ip4:129.15.42.13 ip4:52.86.188.131 ip4:54.236.128.150 ip4:54.236.109.30 ip4:64.72.147.142 ip4:208.86.201.61 ip4:216.37.17.227 ip4:64.72.147.23 ip4:35.80.141.6 ip4:44.229.121.55 ip4:148.59.100.16/28 ~all |
|---|---|
| DMARC | pass policy quarantine |
| DKIM | found: s1, s2, dkim |
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 ou.edu.
Reference: /llms.txt.
IPv6. Does ou.edu work over IPv6? See the live check on aaaa.bot — website, mail and nameservers, graded A–F.
Watch ou.edu. 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