Registered 35 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 76 ms.
Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

| A | 45.60.77.135 45.60.136.135 |
|---|---|
| MX | 15 mx2.acs.iphmx.com 15 mx1.acs.iphmx.com |
| NS | dns2.g01.ns1global.org dns1.g01.ns1global.org dns3.g01.ns1global.org dns4.g01.ns1global.org |
| TXT | nintex.63c1739fadfe2a8d74698c60 8869tut80236fdpv7ifq58pns4 apple-domain-verification=0iCqCtkFuhlvih1S dnmnufjr95htel11sno0tj9lhb google-site-verification=AHAG3OwFbphkZjf3tDbCTK0HG633lIEeyoi9LL0yerw MS=ms12728884 beam-verification=oZ88JkDj4T85X68Ojv8JRfQFPD7snLV7zlUWZXOMhTDrwwDs atlassian-sending-domain-verification=0cdaa03e-8050-4f9b-b498-e5eb3b54020a globalsign-domain-verification=F129BC6DBD80D8319572CECBD7EE0B4F globalsign-domain-verification=B58C7F54B56D0B03467D7CF143CD0D00 smartsheet-site-validation=u6elCTafVtP5l3TZScJwk0LoyJv4-OqX apple-domain-verification=EuDVPj1CGGpch1th anthropic-domain-verification-7etw1e=XfvUFHBpuG2VAFJjuK9SVnlYh facebook-domain-verification=ugswzii35f7teb69ghrlp53iorxshc _globalsign-domain-verification=nU8mdAanRZ7kA72JWqcYNlj7_KybQDS4qy3ybB1eBY google-site-verification=bpPRQOou9h-tYNE5pC7A79P9JKFWFxE59dE7HIeL-GQ globalsign-domain-verification=C79AE4CEA8F7BFECDF9AD3969C125D6A lv1odn73d0o2cah2umsd9vrcl2 _globalsign-domain-verification=2N0ZbAILZzMySieTI2kEUTzuw2jbGpUDAIDrlHCcR0 asv=21d8db143bf62a2d6c650be9f3f07354 nintex.6227c81f7cc0690068186180 adobe-idp-site-verification=53f3e2728df839208cd0be7df7d31525f3c8f0e5dd9d9a7aa97931f662ffad89 miro-verification=42e0f778e09c4a1c4be7f088bf35a153925e4d87 _globalsign-domain-verification=-MWcQVEJvoAX0kxcqKKsARUrnfv61bos4G6qxI8not globalsign-domain-verification=810f8e76b50f3e3b83f920e8ddf39c86 google-site-verification=w47nrsATl2XG69dEiBkAM5h0XVyelcSxpATvvka5dGw google-site-verification=QZh06fOIDVbtBTYnu4qLZFb7oB3qthLxiPOEuvxlKxo doj70qoq0dem52fc8cbnan5tjo. appspace-domain-verification=b8621b285e1e2c6d7b201b4e8e8fd0446d6a1b0bc325dc32f2d1aeac459c6e3d m57ajpud6c3dg59p3aetmrtuhh globalsign-domain-verification=BD498E70A6BF5AE72EEB7BDAC6EFC645 sdtq73r6879nbubof5565h672u atlassian-domain-verification=N5XajoaSFLGE28SB/uZZ5PhUhZRvB4UgRdLUosNLfGilbAmWG5un98NlSyDBGgwI v=spf1 exists:%{i}._i.%{d}._d.espf.agari-dns.net include:%{d}.d5.spf-protect.agari-dns.net -all t9b32ggvig33sh5vujdb85ksv6. idc5vms29100sc8bmjncm49tie ngmefvb0epodlmnfuipobi9gou cisco-ci-domain-verification=4365e0596d7687c7913abe8832c452479ea265ecb2d382405a342b4363864104 docusign=f4af6e9d-b4c1-44a6-8397-677f00cfe37b 8cr6ulsbjqsm4pd6tjobtdg1vn t8mvs2rbj30n14djno8jqsqb6s t9b32ggvig33sh5vujdb85ksv6 google-site-verification=RllKeG4KF2ePPuDCELBtJk50bNST4MA-8jGxljeIvwY google-site-verification=mzqp2zedP8SG3k6xCuUaNMjUBx8_zIJtOx9m4dypbA8 doj70qoq0dem52fc8cbnan5tjo 206sobsmbal80ppemnshtai3ip fastly-domain-delegation-x8LlcWRR706w4mkB-2024-02-29 google-site-verification=rnV_ef4tGN1l0YGLzBs6sJd1gCD49vi1xq9gdYngEpY |
| CAA | {'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0} {'type': 'CAA', 'issue': 'pki.goog', 'critical': 0} {'type': 'CAA', 'critical': 0, 'issuewild': 'amazonaws.com'} {'type': 'CAA', 'issue': 'amazonaws.com', 'critical': 0} {'type': 'CAA', 'critical': 0, 'issuewild': 'globalsign.com'} {'type': 'CAA', 'critical': 128, 'issuewild': 'sectigo.com'} {'type': 'CAA', 'issue': 'globalsign.com', 'critical': 0} {'type': 'CAA', 'issue': 'sectigo.com', 'critical': 128} |
| registrar | Network Solutions, LLC |
|---|---|
| registered | 1991-05-22 |
| expires | 2027-05-23 |
| last changed | 2026-08-12 |
| nameservers | dns1.g01.ns1global.org dns3.g01.ns1global.org dns2.g01.ns1global.org dns4.g01.ns1global.org |
| status | client transfer prohibited |
| valid | yes |
|---|---|
| issuer | Sectigo Limited |
| covers | www.acs.org, acs.org, annualreport.acs.org, annualreportcloud.acs.org, cmspub.acs.org, cmsview.acs.org, cmswww.acs.org, design.acs.org, designcloud.acs.org, gpchemist.acs.org, gpchemistcloud.acs.org, highschoolenergy.acs.org |
| protocol | TLSv1.3 |
Domain is not signed with DNSSEC
| SPF | pass v=spf1 exists:%{i}._i.%{d}._d.espf.agari-dns.net include:%{d}.d5.spf-protect.agari-dns.net -all |
|---|---|
| DMARC | pass policy reject |
| DKIM | found: s1, s2 |
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 acs.org.
Reference: /llms.txt.
IPv6. Does acs.org work over IPv6? See the live check on aaaa.bot — website, mail and nameservers, graded A–F.
Watch acs.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