Registered 27 years ago, on no blocklists we checked, valid HTTPS, the site did not answer (refused).
Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.
| A | 146.75.28.95 |
|---|---|
| MX | 10 mxb-002c5801.gslb.pphosted.com 10 mxa-002c5801.gslb.pphosted.com |
| NS | pdns6.ultradns.co.uk pdns5.ultradns.info pdns2.ultradns.net pdns1.ultradns.net pdns4.ultradns.org pdns3.ultradns.org |
| TXT | Hello GlobalSign CEOS1602043687 adobe-idp-site-verification=e7d316e26179ad0d4b3f90cf2a0754eec7efe5ffd4e42fd68fb1bf562238e1e5 docusign=c61dc97d-90e4-4de9-af63-e70f97e1f783 logmein-verification-code=ab8ef76a-a2b4-415a-a019-7917caa85838 anthropic-domain-verification-xrx7w7=tReUnYJJ3wTsWsyQdP8GakqR6 cisco-ci-domain-verification=291ae6187ea18e0234c2e1c9f08f6baddd910afbb66b5c62fbb58c7e1aa99a11 1password-site-verification=SSE6LJR5OZCBPHTQVLNARPIPGI _globalsign-domain-verification=OYfE_CcZQWFlEEOrR5yVCfCtmiQrm0bBdyUAJyg3qE facebook-domain-verification=xre922w5m9nvmw5waqvlmnq41x7dcz zapier-domain-verification-challenge=a25e9ca6-d313-4cec-94a5-aa8dde7c39cf extensis-domain-verification=247a2c5e-b2c3-477e-a1a1-69522ce10b98 canva-site-verification=Jmh9diDco9XlartV5akcdA google-site-verification=R7ISj7nuUNrrKZ5idAlSAyEzMWU6jdmcRZT2KBGF8LY google-site-verification=PMA0l5p3valJp2QZdgL9GFICUNmnMyz7xn8uUIqaod8 docker-verification=4885e084-3f59-48db-93af-4a98f58a61eb MS=ms78691022 v=spf1 a:mailer.biomedcentral.com ip4:167.89.16.99 ip4:195.140.184.0/22 ip4:195.128.10.25/32 ip4:195.128.10.24/32 ip4:195.128.10.23/32 ip4:66.159.232.113/32 ip4:66.159.234.15/32 ip4:195.128.10.15/32 ip4:195.128.10.18/32 ip4:63.116.214.22/32 ip4:147.253.208.0/20 ip4:192.174.80.0/20 ip4:52.39.255.168/32 include:spf.mandrillapp.com include:spf-002c5801.pphosted.com include:_spf.salesforce.com -all amazonses:wq0TMrNu/vcOjc2BZI7xzuBznIUVO0yeSNu+kZ0/eV4= globalsign-domain-verification=Myyx9Ky7tszX0BbqISSvJjgoGcwXoeDJCF_AYv4UI4 figma-domain-verification=a02807ceec187285dae088008460ab5e258fd494d08ac0c2c56f3739ff32437f-1713256355 deepl-domain-verification=b8faec8a0acd4830a6c745d36a104c04 |
| registrar | EuroDNS S.A. |
|---|---|
| registered | 1999-08-06 |
| expires | 2027-08-06 |
| last changed | 2026-09-29 |
| owner | Springer Nature B.V. |
| nameservers | pdns1.ultradns.net pdns2.ultradns.net pdns3.ultradns.org pdns4.ultradns.org pdns5.ultradns.info pdns6.ultradns.co.uk |
| status | client transfer prohibited server delete prohibited server transfer prohibited server update prohibited active |
| valid | yes |
|---|---|
| issuer | Let's Encrypt |
| covers | biomedcentral.com |
| protocol | TLSv1.3 |
Domain is not signed with DNSSEC
| SPF | pass v=spf1 a:mailer.biomedcentral.com ip4:167.89.16.99 ip4:195.140.184.0/22 ip4:195.128.10.25/32 ip4:195.128.10.24/32 ip4:195.128.10.23/32 ip4:66.159.232.113/32 ip4:66.159.234.15/32 ip4:195.128.10.15/32 ip4:195.128.10.18/32 ip4:63.116.214.22/32 ip4:147.253.208.0/20 ip4:192.174.80.0/20 ip4:52.39.255.168/32 include:spf.mandrillapp.com include:spf-002c5801.pphosted.com include:_spf.salesforce.com -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 biomedcentral.com.
Reference: /llms.txt.
Watch biomedcentral.com. 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