On no blocklists we checked, valid HTTPS, the site answered 200 in 324 ms.
Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

| A | 3.215.148.80 |
|---|---|
| MX | 20 mx0b-002fc702.pphosted.com 10 mxb-002fc702.gslb.pphosted.com 10 mxa-002fc702.gslb.pphosted.com 20 mx0a-002fc702.pphosted.com |
| NS | ucns1.uchicago.uiowa.edu ucns3.uchicago.edu ucns4.uchicago.edu ucns1.uchicago.yale.edu |
| TXT | sendinblue-code:56fef5f252f2b542a17d1fda290834ee sitecore-domain-verification=57b284b71de449bd9625481f78d98efc 5e8ba606248599ac1230346274e5478c28729639618882b65b89452655f7baca adobe-idp-site-verification=740c17ecc9161a756a2009c89a46f06d8ed8fcbcf5cbcc5929b161e89d64767b _rqc5ogctmoyosmv56nvzvy2qu61lw21 fastly-domain-delegation-msyb9pw3vbuhw6pjn-03-03-2025 google-site-verification=X4HjY5FSukG984V8tDYDEYgRE3Y0z_Ece6_y3i7yS_k dell-technologies-domain-verification=uchicago.edu_0718c7f9-c711-4d06-af7b-4b3e542f8bfd_1709675973 d365mktkey=tkgrLNlMjlYxAXQ1DTHiFIUYvBD3VaZXrx2ubqRxZrIx 04FED5FBF242E17CA09EADB1C0A7DC69 ms-domain-verification=bf272ab9-d33c-41ef-9227-285020dd43c5 e2ma-verification=wyhib solarwinds-service0desk-verification=3bee03882b802dbcfadac5b0275e8375 jamf-site-verification=T27LjycoYtvOD0DfaMDDjg 00Dj00000028dIy=1TBUQ0000000AH7 apple-domain-verification=V4q3pWzlXns8FwYs MS=ms16652851 e2ma-verification=7r6bb d365mktkey=hhKQx7KDmfLj6px2wO1BA7juhW1fkMUjmuJgmgpLswYx 649045D00B4A2C1C77FC29A47A552161 8377E9C45E97105F5236271D24BBA204 atlassian-domain-verification=KHv5WO2aIDITZzLBSr0CHScHYmV8wSQTssUI8AQvti6i2XkcL0u/dAdcG49Sty2d adobe-idp-site-verification=3de1049f726cb98ba6f91a88d5a199a7a0144ccfbba4fb24b135374e01306d99 google-site-verification=76OrfKn9k44dGwt-aOLTY8yK0lCWR6PYAXS99nFqBe0 _6a04w8xq8uy4zkhm9zsc1d155v9fw85 atlassian-domain-verification=wQZJpWSihT7D6jx6GunzDqznM0HlcXWBVYh5LBkLQmBbdMhgZ1uoz6lv1IN1WJr4 asv=68279e276e8c891f5eb62a89f5cc12f7 openai-domain-verification=dv-b09uZIIr3mLI4GDLDdEe2zjM formstack-domain-verification=8461eefcc5258c4487c21707dc741d8e 4gh9ifdb9rvcghraipjl64n1rs v=spf1 ip4:128.135.176.0/23 ip4:205.208.106.0/24 ip4:167.89.0.0/17 ip4:198.37.144.0/20 ip4:67.231.145.199 ip4:148.163.143.251 ip4:40.79.65.134 include:_spf.google.com include:spf.protection.outlook.com include:s1.uchicago.edu ?all 61669CF51912E5C87DAEB43DA0CAB76EE0228673D4538FADF36937E5D70C02C8 smartsheet-site-validation=2DPkXbZLP1hLI3_U9DT7vGT3Ie5DWsEI 00Dj00000028dIy=1TBUQ00000000T3 e2ma-verification=vv3gb _jtcpdy05qwrc936dd47ruqg7b9ycboe box-domain-verification=a05d1b0801411db67f507b3e1b437cd16794308d437116cfcd955e044feed23e globalsign-domain-verification=0a-6rIT-p01swJcsjUfmuJtWewYCUhlZtpG8KXHN3- facebook-domain-verification=tboa878nofaaanhghtjo1kwze0cm1r EBF82CE5FFD51FCB400897A1C1F3981C anthropic-domain-verification-h4xfks=DANIrUCPNB6M2xIX7kRtIaL3j 56tc65ukam9agll0hj5jm23lv1 canva-site-verification=vpi_9f6vKkap8fbj-cLNIA cloudflare-verify.cdcshoppingcart.uchicago.edu=923282984-1139220843 _fcls4rwh2lva5t5risnf3grvrl6mk1d mgZjjQ56tRLa5lXSqvX0NwVqWp2den3qJ6gJ02qxnATN8mn+29I3eaO1QsPdVaBfUNrjyNBg0Yr7l9HvgCFzkA== notion-domain-verification=I8I8bxQfblcU2PnCMNnJ252IpStFwQpocWU5RVeiGcE 1password-site-verification=TN6TZ2XIGVGOBDICLF4CQQD7OY |
| valid | yes |
|---|---|
| issuer | InCommon, LLC |
| covers | uchicago.edu |
| protocol | TLSv1.3 |
Domain is properly signed — chain validated by an independent validating resolver
| SPF | warning v=spf1 ip4:128.135.176.0/23 ip4:205.208.106.0/24 ip4:167.89.0.0/17 ip4:198.37.144.0/20 ip4:67.231.145.199 ip4:148.163.143.251 ip4:40.79.65.134 include:_spf.google.com include:spf.protection.outlook.com include:s1.uchicago.edu ?all |
|---|---|
| DMARC | warning policy none |
| DKIM | found: google, selector1, s1, s2, mail |
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 uchicago.edu.
Reference: /llms.txt.
IPv6. Does uchicago.edu work over IPv6? See the live check on aaaa.bot — website, mail and nameservers, graded A–F.
Watch uchicago.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