DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
ctfchallenge.com runs on Cloudflare, with DNS by Cloudflare and email via Google Workspace.
- Hosting network
- CloudflareAS13335Cloudflare
- Managed DNS
- Cloudflare
- Google Workspace
- IPv6 (AAAA)
- Enabled
- CAA pinning
- None
Sits alongside 4,999+ other sites on Cloudflare. Stable here since we started watching (Jul 18, 2026).
The apex and www are the same hosting — the apex via A records.
DNS Records for ctfchallenge.com
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| ctfchallenge.com | NS | 0 | amber.ns.cloudflare.com | |
| ctfchallenge.com | NS | 0 | dan.ns.cloudflare.com | |
| ctfchallenge.com | SOA | 1800 | amber.ns.cloudflare.com dns.cloudflare.com 2408544265 10000 2400 604800 1800 | |
| ctfchallenge.com | AAAA | 0 | 2606:4700:3036::6815:268b | |
| ctfchallenge.com | AAAA | 0 | 2606:4700:3037::ac43:df2d | |
| ctfchallenge.com | TXT | 0 | google-site-verification=PRAtn9nkQs0BMVYPlV2UUDv0TuvcBPQo0JTdBkkwKaI | |
| ctfchallenge.com | TXT | 0 | google-site-verification=dFTzR_ULz5t6ae-olQe_QSAEOt83d5bPxSdydXl1MDI | |
| ctfchallenge.com | TXT | 0 | v=spf1 include:_spf.google.com -all | |
| ctfchallenge.com | MX | 0 | 10 | alt3.aspmx.l.google.com |
| ctfchallenge.com | MX | 0 | 5 | alt1.aspmx.l.google.com |
| ctfchallenge.com | MX | 0 | 10 | alt4.aspmx.l.google.com |
| ctfchallenge.com | MX | 0 | 1 | aspmx.l.google.com |
| ctfchallenge.com | MX | 0 | 5 | alt2.aspmx.l.google.com |
| ctfchallenge.com | A | 0 | 172.67.223.45 | |
| ctfchallenge.com | A | 0 | 104.21.38.139 | |
| www.ctfchallenge.com | A | 0 | 104.21.38.139 | |
| www.ctfchallenge.com | A | 0 | 172.67.223.45 | |
| www.ctfchallenge.com | AAAA | 0 | 2606:4700:3036::6815:268b | |
| www.ctfchallenge.com | AAAA | 0 | 2606:4700:3037::ac43:df2d |
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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.
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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