DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
21stcentury.org runs on Cloudflare, with DNS by Cloudflare and email configured.
- Hosting network
- CloudflareAS13335Cloudflare
- Managed DNS
- Cloudflare
- Configured
- IPv6 (AAAA)
- Enabled
- CAA pinning
- None
Sits alongside 3,710,906 other sites on Cloudflare. Stable here since we started watching (Sep 13, 2026).
The apex and www are the same hosting — the apex via A records.
DNS Records for 21stcentury.org
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| 21stcentury.org | SOA | 1800 | abby.ns.cloudflare.com dns.cloudflare.com 2415419415 10000 2400 604800 1800 | |
| 21stcentury.org | NS | 0 | beau.ns.cloudflare.com | |
| 21stcentury.org | NS | 0 | abby.ns.cloudflare.com | |
| 21stcentury.org | A | 0 | 172.67.139.126 | |
| 21stcentury.org | A | 0 | 104.21.26.227 | |
| 21stcentury.org | AAAA | 0 | 2606:4700:3034::6815:1ae3 | |
| 21stcentury.org | AAAA | 0 | 2606:4700:3032::ac43:8b7e | |
| 21stcentury.org | TXT | 0 | v=spf1 include:spf.titan.email ~all | |
| 21stcentury.org | MX | 0 | 10 | mx1.titan.email |
| 21stcentury.org | MX | 0 | 20 | mx2.titan.email |
| www.21stcentury.org | AAAA | 0 | 2606:4700:3032::ac43:8b7e | |
| www.21stcentury.org | AAAA | 0 | 2606:4700:3034::6815:1ae3 | |
| www.21stcentury.org | A | 0 | 104.21.26.227 | |
| www.21stcentury.org | A | 0 | 172.67.139.126 |
Get alerted the moment 21stcentury.org's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch 21stcentury.org continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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About DNS Records
DNS (Domain Name System) records are instructions that provide information about a domain, including its IP addresses, mail servers, and other services. Common record types include:
- SOA (Start of Authority) - Contains administrative information about the zone
- NS (Nameserver) - Specifies authoritative nameservers for the domain
- A (Address) - Maps a domain to an IPv4 address
- AAAA - Maps a domain to an IPv6 address
- CNAME (Canonical Name) - Creates an alias pointing to another domain
- MX (Mail Exchange) - Specifies mail servers for the domain