xkcd.com
xkcd: Simulation
xkcd.com is registered with GoDaddy.com, LLC since January 26, 2003 (23.8 years). The registration expires on January 26, 2028. The site runs on Varnish, Fastly, Nginx. Its email security grade is D. Its SSL certificate is issued by GlobalSign nv-sa and is valid for 61 more days.
- Domain age
- 23.8 yrs
- Technologies
- 3
- Email security
- D
- SSL days left
- 61
Registration
| Registrar | GoDaddy.com, LLC |
|---|---|
| IANA ID | 146 |
| Registered | January 26, 2003 |
| Expires | January 26, 2028 |
| Updated | August 26, 2026 |
| Status | client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited |
| Name servers | ns-cloud-d1.googledomains.com, ns-cloud-d2.googledomains.com, ns-cloud-d3.googledomains.com, ns-cloud-d4.googledomains.com |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 151.101.0.67 | 285 |
| A | 151.101.192.67 | 285 |
| A | 151.101.128.67 | 285 |
| A | 151.101.64.67 | 285 |
| MX | aspmx2.googlemail.com 30 | 300 |
| MX | aspmx5.googlemail.com 30 | 300 |
| MX | alt1.aspmx.l.google.com 20 | 300 |
| MX | aspmx4.googlemail.com 30 | 300 |
| MX | alt2.aspmx.l.google.com 20 | 300 |
| MX | aspmx3.googlemail.com 30 | 300 |
| MX | aspmx.l.google.com 10 | 300 |
| NS | ns-cloud-d3.googledomains.com | 21600 |
| NS | ns-cloud-d4.googledomains.com | 21600 |
| NS | ns-cloud-d1.googledomains.com | 21600 |
| NS | ns-cloud-d2.googledomains.com | 21600 |
| CAA | issue 128 globalsign.com | 300 |
| CAA | issuewild 128 globalsign.com | 300 |
| CAA | issue 128 letsencrypt.org | 300 |
| TXT | v=spf1 include:_spf.google.com include:mailgun.org ~all | 300 |
| AAAA | 2a04:4e42:200::67 | 281 |
| AAAA | 2a04:4e42:400::67 | 281 |
| AAAA | 2a04:4e42::67 | 281 |
| AAAA | 2a04:4e42:600::67 | 281 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | BE, GlobalSign Atlas R3 DV TLS CA 2025 Q4, GlobalSign nv-sa |
| Expires | January 10, 2027 |
| Days remaining | 61 |
| Protocol | TLSv1.2 |
| Names | xkcd.com |
Email security
- warnDMARC policy is none (monitoring only). Spoofed mail is still delivered.
- warnDKIM key found (selector: google) but it is only 1024 bits; 2048 is recommended.
- 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 aggregate reports are sent to mailto:[email protected].
- good7 MX record(s) found. Mail is handled by Google Workspace.
Homepage metadata
| Title | xkcd: Simulation |
|---|---|
| Indexable | Yes |
| Word count | 188 |
About xkcd.com
Who is the registrar of xkcd.com?
xkcd.com is registered with GoDaddy.com, LLC (IANA ID 146).
When does xkcd.com expire?
The current registration of xkcd.com expires on January 26, 2028. It was first registered on January 26, 2003.
What technology does xkcd.com use?
We detected 3 technologies on xkcd.com, including Varnish, Fastly, Nginx.
Does xkcd.com protect its email with SPF and DMARC?
xkcd.com scores 60/100 (grade D) for email security. DMARC policy is none (monitoring only). Spoofed mail is still delivered. DKIM key found (selector: google) but it is only 1024 bits; 2048 is recommended.
What are the name servers of xkcd.com?
xkcd.com uses ns-cloud-d3.googledomains.com, ns-cloud-d4.googledomains.com, ns-cloud-d1.googledomains.com, ns-cloud-d2.googledomains.com.