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Hosting & Network
12u.biz runs on AS398019, with email configured.
- Hosting network
- AS398019AS398019
- Managed DNS
- Self-hosted / other
- Configured
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 81 other sites on AS398019. Stable here since we started watching (Jul 17, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to 12u.biz.
DNS Records for 12u.biz
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| 12u.biz | NS | 0 | ns6.dynu.com | |
| 12u.biz | NS | 0 | ns1.dynu.com | |
| 12u.biz | NS | 0 | ns5.dynu.com | |
| 12u.biz | NS | 0 | ns2.dynu.com | |
| 12u.biz | NS | 0 | ns3.dynu.com | |
| 12u.biz | NS | 0 | ns4.dynu.com | |
| 12u.biz | SOA | 300 | ns1.dynu.com administrator.dynu.com 10 3600 900 604800 300 | |
| 12u.biz | A | 0 | 162.216.241.37 | |
| 12u.biz | MX | 0 | 10 | mail.laminar.net |
| 12u.biz | TXT | 0 | v=spf1 ip4:162.216.240.170 ip6:2600:c05:3010:50:399::1 -all | |
| www.12u.biz | CNAME | 0 | 12u.biz | |
| www.12u.biz | TXT | 0 | v=spf1 ip4:162.216.240.170 ip6:2600:c05:3010:50:399::1 -all | |
| www.12u.biz | A | 0 | 162.216.241.37 | |
| www.12u.biz | NS | 0 | ns4.dynu.com | |
| www.12u.biz | NS | 0 | ns2.dynu.com | |
| www.12u.biz | NS | 0 | ns3.dynu.com | |
| www.12u.biz | NS | 0 | ns1.dynu.com | |
| www.12u.biz | NS | 0 | ns5.dynu.com | |
| www.12u.biz | NS | 0 | ns6.dynu.com | |
| www.12u.biz | SOA | 300 | ns1.dynu.com administrator.dynu.com 10 3600 900 604800 300 | |
| www.12u.biz | MX | 0 | 10 | mail.laminar.net |
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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