DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
castletc.org runs on Cloudflare, with DNS by Cloudflare and email via Cloudflare Email.
- Hosting network
- CloudflareAS13335Cloudflare
- Managed DNS
- Cloudflare
- Cloudflare Email
- IPv6 (AAAA)
- Enabled
- CAA pinning
- None
Sits alongside 5,023,094 other sites on Cloudflare.
Recently changed networks: AS20473 → Cloudflare (AS13335) (as of Oct 13, 2026)
The apex and www are the same hosting — the apex via A records.
DNS Records for castletc.org
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| castletc.org | NS | 0 | brett.ns.cloudflare.com | |
| castletc.org | NS | 0 | zara.ns.cloudflare.com | |
| castletc.org | SOA | 1800 | brett.ns.cloudflare.com dns.cloudflare.com 2416104667 10000 2400 604800 1800 | |
| castletc.org | TXT | 0 | v=spf1 include:_spf.mx.cloudflare.net ~all | |
| castletc.org | MX | 0 | 71 | route3.mx.cloudflare.net |
| castletc.org | MX | 0 | 87 | route1.mx.cloudflare.net |
| castletc.org | MX | 0 | 4 | route2.mx.cloudflare.net |
| castletc.org | AAAA | 0 | 2606:4700:3036::ac43:9371 | |
| castletc.org | AAAA | 0 | 2606:4700:3034::6815:47a9 | |
| castletc.org | A | 0 | 172.67.147.113 | |
| castletc.org | A | 0 | 104.21.71.169 | |
| www.castletc.org | AAAA | 0 | 2606:4700:3036::ac43:9371 | |
| www.castletc.org | AAAA | 0 | 2606:4700:3034::6815:47a9 | |
| www.castletc.org | A | 0 | 104.21.71.169 | |
| www.castletc.org | A | 0 | 172.67.147.113 |
Get alerted the moment castletc.org's DNS changes
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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