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Hosting & Network
atag.zone runs on AS21221 (multi-homed across 2 networks), with email via Proofpoint.
- Managed DNS
- Self-hosted / other
- Proofpoint
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 5,077 other sites on AS21221. Stable here since we started watching (Sep 23, 2026).
The apex and www are the same hosting — the apex via A records.
DNS Records for atag.zone
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| atag.zone | TXT | 0 | v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all | |
| atag.zone | A | 0 | 91.235.83.121 | |
| atag.zone | NS | 0 | ns2.wh2ahosted.nl | |
| atag.zone | NS | 0 | ns1.wh2ahosted.nl | |
| atag.zone | SOA | 10800 | ns1.wh2ahosted.nl rend.wh2a.com 2024090402 14400 3600 604800 10800 | |
| atag.zone | MX | 0 | 20 | mxa-004bb102.gslb.pphosted.com |
| atag.zone | MX | 0 | 20 | mxb-004bb102.gslb.pphosted.com |
| www.atag.zone | A | 0 | 91.235.83.121 |
Get alerted the moment atag.zone's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch atag.zone 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