DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
k21.top runs on Cloudflare, with DNS by Cloudflare.
- Hosting network
- CloudflareAS13335Cloudflare
- Managed DNS
- Cloudflare
- None
- IPv6 (AAAA)
- Enabled
- CAA pinning
- None
Sits alongside 3,645,022 other sites on Cloudflare. Stable here since we started watching (Sep 18, 2026).
The apex and www are the same hosting — the apex via A records.
DNS Records for k21.top
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| k21.top | NS | 0 | yisroel.ns.cloudflare.com | |
| k21.top | NS | 0 | emma.ns.cloudflare.com | |
| k21.top | SOA | 1800 | emma.ns.cloudflare.com dns.cloudflare.com 2411988179 10000 2400 604800 1800 | |
| k21.top | A | 0 | 172.67.197.27 | |
| k21.top | A | 0 | 104.21.84.206 | |
| k21.top | AAAA | 0 | 2606:4700:3033::ac43:c51b | |
| k21.top | AAAA | 0 | 2606:4700:3035::6815:54ce | |
| www.k21.top | A | 0 | 104.21.84.206 | |
| www.k21.top | A | 0 | 172.67.197.27 | |
| www.k21.top | AAAA | 0 | 2606:4700:3033::ac43:c51b | |
| www.k21.top | AAAA | 0 | 2606:4700:3035::6815:54ce |
Get alerted the moment k21.top's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch k21.top 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