regex101.com
regex101: Online Regex Tester, Builder, Converter & Debugger
regex101.com is registered with NameCheap, Inc. since August 15, 2012 (14.2 years). The registration expires on August 15, 2027. The site runs on Content Security Policy, Nginx. Its email security grade is F. Its SSL certificate is issued by Let's Encrypt and is valid for 74 more days.
- Domain age
- 14.2 yrs
- Technologies
- 2
- Email security
- F
- SSL days left
- 74
Registration
| Registrar | NameCheap, Inc. |
|---|---|
| IANA ID | 1068 |
| Registered | August 15, 2012 |
| Expires | August 15, 2027 |
| Updated | July 16, 2026 |
| Status | client transfer prohibited |
| Name servers | dns1.registrar-servers.com, dns2.registrar-servers.com |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 78.47.220.195 | 61 |
| MX | smtp.google.com 1 | 1799 |
| NS | dns1.registrar-servers.com | 1800 |
| NS | dns2.registrar-servers.com | 1800 |
| TXT | v=spf1 include:_spf.google.com ~all | 60 |
| TXT | google-site-verification=e3kdGikhQf2oBB_SquqmSxSnG-lMK1_3i2dGXNBZprA | 60 |
| AAAA | 2a01:4f8:1c1c:13a4::1 | 300 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YE1, Let's Encrypt |
| Expires | January 24, 2027 |
| Days remaining | 74 |
| Protocol | TLSv1.3 |
| Names | docs.regex101.com, logs.regex101.com, regex101.com, status.regex101.com, www.regex101.com |
Email security
- badNo DMARC record. Receivers have no instructions for mail that fails SPF and DKIM, and you get no reports about who sends as your domain.
- warnNo MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
- warnNo TLS-RPT record, so you won't hear about failed encrypted deliveries.
- warnNo BIMI record (optional: shows your logo next to your emails in supporting inboxes).
- goodSPF record found.
- goodSPF ends with ~all: servers you have not listed are marked as suspicious (soft fail).
- goodDKIM keys found (selector: google).
- good1 MX record(s) found. Mail is handled by Google Workspace.
Homepage metadata
| Title | regex101: Online Regex Tester, Builder, Converter & Debugger |
|---|---|
| Description | Build, test, debug and convert regex with real-time matches, clear explanations and an AI-assisted workflow. Supports PCRE2, JavaScript, Python and more. |
| Language | en |
| Canonical | https://regex101.com/ |
| Indexable | Yes |
| Word count | 315 |
About regex101.com
Who is the registrar of regex101.com?
regex101.com is registered with NameCheap, Inc. (IANA ID 1068).
When does regex101.com expire?
The current registration of regex101.com expires on August 15, 2027. It was first registered on August 15, 2012.
What technology does regex101.com use?
We detected 2 technologies on regex101.com, including Content Security Policy, Nginx.
Does regex101.com protect its email with SPF and DMARC?
regex101.com scores 43/100 (grade F) for email security. No DMARC record. Receivers have no instructions for mail that fails SPF and DKIM, and you get no reports about who sends as your domain. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
What are the name servers of regex101.com?
regex101.com uses dns1.registrar-servers.com, dns2.registrar-servers.com.