DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
a1-systems.com runs on AS49452, with email configured.
- Hosting network
- AS49452AS49452
- Managed DNS
- Self-hosted / other
- Configured
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- Set
Sits alongside 12 other sites on AS49452. Stable here since we started watching (Aug 21, 2026).
DNS Records for a1-systems.com
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| a1-systems.com | NS | 0 | ns2.a1-systems.com | |
| a1-systems.com | NS | 0 | ns1.a1-systems.com | |
| a1-systems.com | NS | 0 | ns3.a1-systems.com | |
| a1-systems.com | TXT | 0 | globalsign-domain-verification=Z-wHmeLt3vTP3jJR6-M1PSu1vP6rJjhjSYqOvsYGBF | |
| a1-systems.com | TXT | 0 | v=spf1 mx include:spf.unisender.com ip4:199.68.197.122 ip4:103.228.169.247 ip4:31.44.89.53 -all | |
| a1-systems.com | SOA | 3600 | ns1.a1-systems.com noc.a1-systems.com 2026100205 1200 7200 864000 3600 | |
| a1-systems.com | CAA | 0 | 0 issue digicert.com | |
| a1-systems.com | CAA | 0 | 0 issue globalsign.com | |
| a1-systems.com | CAA | 0 | 0 iodef mailto:it@a1-systems.com | |
| a1-systems.com | A | 0 | 91.213.5.55 | |
| a1-systems.com | MX | 0 | 10 | mx1.a1-systems.com |
| a1-systems.com | MX | 0 | 20 | mx2.a1-systems.com |
| www.a1-systems.com | A | 0 | 91.213.5.55 | |
| www.a1-systems.com | A | 0 | 91.213.5.56 |
Get alerted the moment a1-systems.com's DNS changes
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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
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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