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Hosting & Network
osys.se runs on AS8473, with email configured.
- Hosting network
- AS8473AS8473
- Managed DNS
- Self-hosted / other
- Configured
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- Set
Sits alongside 5,707 other sites on AS8473. Stable here since we started watching (Aug 28, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to srv06.osys.se.
DNS Records for osys.se
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| osys.se | MX | 0 | 1 | srv06.osys.se |
| osys.se | SOA | 600 | srv04.osys.se hostmaster.osys.se 2026053181 120 60 2419200 600 | |
| osys.se | TXT | 0 | v=spf1 mx a ip4:217.31.178.0/27 ip6:2001:09b1:8116::/48 include:spf.protection.outlook.com -all | |
| osys.se | CAA | 0 | 0 issue letsencrypt.org | |
| osys.se | NS | 0 | srv04.osys.se | |
| osys.se | NS | 0 | srv06.osys.se | |
| osys.se | A | 0 | 217.31.178.6 | |
| www.osys.se | CNAME | 0 | srv06.osys.se | |
| www.osys.se | A | 0 | 217.31.178.6 |
Get alerted the moment osys.se's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch osys.se 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
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