DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
a21.fi runs on Amazon AWS, with DNS by Cloudflare and email via Google Workspace.
- Hosting network
- Amazon AWSAS16509Amazon AWS
- Managed DNS
- Cloudflare
- Google Workspace
- IPv6 (AAAA)
- Enabled
- CAA pinning
- None
Sits alongside 6,204,427 other sites on Amazon AWS. Stable here since we started watching (Sep 22, 2026).
DNS Records for a21.fi
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| a21.fi | NS | 0 | rihana.ns.cloudflare.com | |
| a21.fi | NS | 0 | norm.ns.cloudflare.com | |
| a21.fi | TXT | 0 | globalsign-domain-verification=Mu0l5q7-DpNUoQavDtNZzf0uJbIEPoIvjC3sh0RVs4 | |
| a21.fi | TXT | 0 | firebase=notrello-1ff30 | |
| a21.fi | SOA | 1800 | norm.ns.cloudflare.com dns.cloudflare.com 2416463310 10000 2400 604800 1800 | |
| a21.fi | MX | 0 | 5 | alt1.aspmx.l.google.com |
| a21.fi | MX | 0 | 10 | alt4.aspmx.l.google.com |
| a21.fi | MX | 0 | 1 | aspmx.l.google.com |
| a21.fi | MX | 0 | 5 | alt2.aspmx.l.google.com |
| a21.fi | MX | 0 | 10 | alt3.aspmx.l.google.com |
| a21.fi | AAAA | 0 | 2600:9000:20ea:3800:2:1b74:9940:21 | |
| a21.fi | AAAA | 0 | 2600:9000:20ea:b400:2:1b74:9940:21 | |
| a21.fi | AAAA | 0 | 2600:9000:20ea:ee00:2:1b74:9940:21 | |
| a21.fi | AAAA | 0 | 2600:9000:20ea:7800:2:1b74:9940:21 | |
| a21.fi | AAAA | 0 | 2600:9000:20ea:ec00:2:1b74:9940:21 | |
| a21.fi | AAAA | 0 | 2600:9000:20ea:2200:2:1b74:9940:21 | |
| a21.fi | AAAA | 0 | 2600:9000:20ea:3c00:2:1b74:9940:21 | |
| a21.fi | AAAA | 0 | 2600:9000:20ea:4e00:2:1b74:9940:21 | |
| a21.fi | A | 0 | 18.164.131.31 | |
| a21.fi | A | 0 | 18.164.131.165 | |
| a21.fi | A | 0 | 18.164.131.58 | |
| a21.fi | A | 0 | 18.164.131.133 | |
| www.a21.fi | AAAA | 0 | 2606:4700:3036::ac43:8a35 | |
| www.a21.fi | AAAA | 0 | 2606:4700:3036::6815:366e | |
| www.a21.fi | A | 0 | 172.67.138.53 | |
| www.a21.fi | A | 0 | 104.21.54.110 |
Get alerted the moment a21.fi's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch a21.fi 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, CNAME, TXT 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