DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
osull.org runs on AS20055, with DNS by Cloudflare and email configured.
- Hosting network
- AS20055AS20055
- Managed DNS
- Cloudflare
- Configured
- IPv6 (AAAA)
- Enabled
- CAA pinning
- None
Sits alongside 821 other sites on AS20055. Stable here since we started watching (Aug 20, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to nginx-router.seanos.net.
DNS Records for osull.org
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| osull.org | AAAA | 0 | 2600:a801:1030:200:d041:bff:fec8:57bd | |
| osull.org | SOA | 1800 | alaric.ns.cloudflare.com dns.cloudflare.com 2413841014 10000 2400 604800 1800 | |
| osull.org | TXT | 0 | v=spf1 include:spf.messagingengine.com include:wa.seanos.net include:dub.seanos.net ip4:66.111.4.238 -all | |
| osull.org | NS | 0 | alaric.ns.cloudflare.com | |
| osull.org | NS | 0 | magdalena.ns.cloudflare.com | |
| osull.org | A | 0 | 50.106.9.42 | |
| osull.org | MX | 0 | 10 | in1-smtp.messagingengine.com |
| osull.org | MX | 0 | 20 | in2-smtp.messagingengine.com |
| www.osull.org | CNAME | 0 | nginx-router.seanos.net | |
| www.osull.org | AAAA | 0 | 2600:a801:1030:200:d041:bff:fec8:57bd | |
| www.osull.org | A | 0 | 50.106.9.42 |
Get alerted the moment osull.org's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch osull.org 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