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Hosting & Network
21shu.com runs on AS49466 (multi-homed across 2 networks).
- Managed DNS
- Self-hosted / other
- None
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 166 other sites on AS49466. Stable here since we started watching (Jul 26, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to 72d73928.ceracdn.net.
DNS Records for 21shu.com
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| 21shu.com | CNAME | 0 | 72d73928.ceracdn.net | |
| 21shu.com | A | 0 | 23.248.222.45 | |
| 21shu.com | A | 0 | 93.93.246.249 | |
| 21shu.com | NS | 0 | a.share-dns.com | |
| 21shu.com | NS | 0 | b.share-dns.net | |
| 21shu.com | SOA | 600 | a.share-dns.com master.share-dns.com 1762415072 3600 1200 86400 600 | |
| www.21shu.com | CNAME | 0 | 72d73928.ceracdn.net | |
| www.21shu.com | A | 0 | 93.93.246.249 | |
| www.21shu.com | A | 0 | 23.248.222.45 |
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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