validator.w3.org
The W3C Markup Validation Service
validator.w3.org is registered with Gandi SAS since July 6, 1994 (32.3 years). The registration expires on July 5, 2029. The site runs on Cloudflare, HSTS. Its email security grade is B. Its SSL certificate is issued by Google Trust Services and is valid for 84 more days.
- Domain age
- 32.3 yrs
- Technologies
- 2
- Email security
- B
- SSL days left
- 84
Registration
| Registrar | Gandi SAS |
|---|---|
| IANA ID | 81 |
| Registered | July 6, 1994 |
| Expires | July 5, 2029 |
| Updated | August 12, 2026 |
| Status | client delete prohibited, client transfer prohibited |
| Name servers | jamie.ns.cloudflare.com, pranab.ns.cloudflare.com |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 104.18.22.19 | 200 |
| A | 104.18.23.19 | 200 |
| AAAA | 2606:4700::6812:1613 | 300 |
| AAAA | 2606:4700::6812:1713 | 300 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, WE1, Google Trust Services |
| Expires | February 2, 2027 |
| Days remaining | 84 |
| Protocol | TLSv1.3 |
| Names | w3.org, *.w3.org |
Email security
- 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).
- goodDMARC policy is reject: mail that fails authentication is blocked.
- goodDMARC aggregate reports are sent to mailto:[email protected], mailto:[email protected].
- goodDKIM keys found (selector: s1).
- good2 MX record(s) found.
Homepage metadata
| Title | The W3C Markup Validation Service |
|---|---|
| Description | W3C's easy-to-use markup validation service, based on SGML and XML parsers. |
| Language | en |
| Indexable | Yes |
| Word count | 939 |
About validator.w3.org
Who is the registrar of validator.w3.org?
validator.w3.org is registered with Gandi SAS (IANA ID 81).
When does validator.w3.org expire?
The current registration of validator.w3.org expires on July 5, 2029. It was first registered on July 6, 1994.
What technology does validator.w3.org use?
We detected 2 technologies on validator.w3.org, including Cloudflare, HSTS.
Does validator.w3.org protect its email with SPF and DMARC?
validator.w3.org scores 83/100 (grade B) for email security. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection. No TLS-RPT record, so you won't hear about failed encrypted deliveries.