DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
21.cn runs on AS136160.
- Hosting network
- AS136160AS136160
- Managed DNS
- Self-hosted / other
- None
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 31 other sites on AS136160. Stable here since we started watching (Jul 17, 2026).
The apex and www are the same hosting — the apex via A records.
DNS Records for 21.cn
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| 21.cn | A | 0 | 103.82.54.182 | |
| 21.cn | NS | 0 | ns1.alidns.com | |
| 21.cn | NS | 0 | ns2.alidns.com | |
| 21.cn | SOA | 600 | ns1.alidns.com hostmaster.hichina.com 2026011209 3600 1200 86400 600 | |
| www.21.cn | A | 0 | 103.82.54.182 |
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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