Domain > spamcheck.postmarkapp.com

More information on this domain is in AlienVault OTX

DNS Resolutions

Date	IP Address
2021-05-21	13.226.178.109 (ClassC)
2021-05-21	13.226.178.108 (ClassC)
2021-06-17	13.225.66.88 (ClassC)
2021-08-30	13.225.67.15 (ClassC)
2022-08-24	65.8.243.43 (ClassC)
2022-10-25	143.204.9.97 (ClassC)
2024-01-11	3.136.198.246 (ClassC)
2024-03-13	3.15.98.50 (ClassC)
2024-03-17	3.139.28.86 (ClassC)
2024-03-22	3.12.236.26 (ClassC)
2024-06-27	3.130.236.68 (ClassC)
2024-07-21	3.12.245.253 (ClassC)
2024-08-06	18.223.197.243 (ClassC)
2024-10-23	18.119.79.129 (ClassC)
2025-01-12	3.21.78.221 (ClassC)
2025-04-16	3.148.33.86 (ClassC)
2025-08-24	3.134.58.62 (ClassC)
2025-09-06	3.15.75.24 (ClassC)
2025-09-21	18.217.110.128 (ClassC)
2025-10-19	3.20.199.16 (ClassC)
2025-10-22	3.20.137.186 (ClassC)

HTTP/1.1 200 OKDate: Thu, 11 Jan 2024 05:20:56 GMTContent-Type: text/html; charsetUTF-8Content-Length: 5131Connection: keep-aliveServer: nginx/1.25.3Last-Modified: Wed, 22 Nov 2023 17:06:22 GMTETag: 6

!DOCTYPE html>html langen>head>  script>dataLayer  {    siteType: spamcheck  };  /script>  !-- Google Tag Manager -->  script>(function (w, d, s, l, i) {    wl  wl || ;    wl.push({      gtm.start: new Date().getTime(), event: gtm.js    });    var f  d.getElementsByTagName(s)0,      j  d.createElement(s), dl  l ! dataLayer ? &l + l : ;    j.async  true;    j.src       https://www.googletagmanager.com/gtm.js?id + i + dl;    f.parentNode.insertBefore(j, f);  })(window, document, script, dataLayer, GTM-PWV3TKM);/script>  !-- End Google Tag Manager -->  meta charsetutf-8>  title>Free JSON API to instantly check the spam score of your email messages/title>  meta namedescription        contentInstantly check an emails SpamAssassin spam score with with Postmarks SpamAssassin API.>  meta nameviewport contentwidth980>  meta http-equivX-UA-Compatible contentIEedge>  meta propertyog:title contentFree JSON API to instantly check the spam score of your email messages. />  meta propertyog:type contentwebsite/>  meta propertyog:url contenthttps://spamcheck.postmarkapp.com/>  meta propertyog:image contenthttps://postmark-asset.s3.amazonaws.com/postmark.png/>  meta propertyog:site_name contentPostmark's Free Spam Check API/>  meta propertyfb:admins content10500779/>  meta propertyog:locale contenten_US/>  script typetext/javascript srchttps://ajax.googleapis.com/ajax/libs/jquery/1.6.3/jquery.min.js>/script>  script typetext/javascript srcjavascripts/cufon-yui.js>/script>  script typetext/javascript srcjavascripts/rockwell.font.js>/script>  script typetext/javascript srcjavascripts/global.js>/script>  link relstylesheet hrefstylesheets/global.css mediaall>  link relShortcut Icon hrefhttps://postmarkapp.com/images/landing/favicon.ico>/head>body>!-- Google Tag Manager (noscript) -->noscript>  iframe srchttps://www.googletagmanager.com/ns.html?idGTM-NJ6RB5 height0 width0          styledisplay:none;visibility:hidden>/iframe>/noscript>!-- End Google Tag Manager (noscript) -->div classwrap>  div classwrap-beta>    header>      h1>a

Subdomains

Date	Domain	IP
assets-useast2.postmarkapp.com	2021-11-19	99.84.64.22
rebound.postmarkapp.com	2023-10-04	3.14.57.40
rwd.postmarkapp.com	2025-10-12	161.35.235.194
blog.postmarkapp.com	2014-06-06	66.6.40.74
sg.postmarkapp.com	2024-11-24	18.224.119.155
api.postmarkapp.com	2023-08-16	3.137.63.180
spamcheck.postmarkapp.com	2024-01-11	3.136.198.246
assets.postmarkapp.com	2024-07-22	99.84.66.66
public-assets.postmarkapp.com	2025-10-13	50.31.156.110
craft-assets.postmarkapp.com	2025-03-09	3.163.189.111
status.postmarkapp.com	2025-08-10	146.75.41.91
account.postmarkapp.com	2024-05-09	3.137.63.19
support.postmarkapp.com	2024-07-12	18.216.16.253
public-assets-dev.postmarkapp.com	2025-10-13	50.31.156.110
www.postmarkapp.com	2023-10-04	3.138.237.220

View on OTX | View on ThreatMiner

Data with thanks to AlienVault OTX, VirusTotal, Malwr and others. [Sitemap]

Domain > spamcheck.postmarkapp.com

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DNS Resolutions

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Port 443

Subdomains