Regular Expressions Domain Security

Domain security

Domain security posture for Regular Expressions, probed live across 2 host(s) and 2 registrable domain(s). 2 host(s) serve HTTPS (up to TLSv1.3); 1 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC absent.

Pattern MatchingProgrammingString ManipulationText ProcessingValidationSearchParsing

Transport & Host Security

www.regular-expressions.info

HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 29 17:22:44 2026 GMT

regex101.com

HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 23 23:35:38 2026 GMT

Domain (DNS/Email) Security

regular-expressions.info

DNSSEC: no · SPF: yes · DMARC: no · CAA: yes

regex101.com

DNSSEC: no · SPF: no · DMARC: no · CAA: none

Source

Domain Security

generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.regular-expressions.info
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 29 17:22:44 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: regex101.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 23 23:35:38 2026 GMT
  hsts: false
domains:
- domain: regular-expressions.info
  dnssec: false
  caa:
  - 0 issue "letsencrypt.org"
  spf: true
  dmarc: false
- domain: regex101.com
  dnssec: false
  caa: []
  spf: false
  dmarc: false