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Hosting & Network
duodoc.nl runs on AS21221, with email via Microsoft 365.
- Hosting network
- AS21221AS21221
- Managed DNS
- Self-hosted / other
- Microsoft 365
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 690 other sites on AS21221. Stable here since we started watching (Jul 21, 2026).
The apex and www are the same hosting — the apex via A records.
DNS Records for duodoc.nl
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| duodoc.nl | TXT | 0 | v=spf1 mx a ip4:84.241.182.77 include:spf.protection.outlook.com -all | |
| duodoc.nl | NS | 0 | ns1.qweb.net | |
| duodoc.nl | NS | 0 | ns3.qweb.co | |
| duodoc.nl | NS | 0 | ns2.qweb.nu | |
| duodoc.nl | A | 0 | 217.18.64.30 | |
| duodoc.nl | SOA | 3600 | ns1.qweb.net support.qweb.nl 2025081101 3600 3600 604800 3600 | |
| duodoc.nl | MX | 0 | 10 | duodoc-nl.mail.protection.outlook.com |
| www.duodoc.nl | A | 0 | 217.18.64.30 |
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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