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Hosting & Network
s4s.is runs on AS209214, with email via Microsoft 365.
- Hosting network
- AS209214AS209214
- Managed DNS
- Self-hosted / other
- Microsoft 365
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 52 other sites on AS209214. Stable here since we started watching (Sep 13, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to s4s.is.
DNS Records for s4s.is
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| s4s.is | MX | 0 | 10 | s4s-is.mail.protection.outlook.com |
| s4s.is | A | 0 | 185.248.123.61 | |
| s4s.is | TXT | 0 | globalsign-domain-verification=8508CB91CD8323A8A7DEB35F2B8A3737 | |
| s4s.is | TXT | 0 | v=spf1 include:spf.xnet.is include:mailgun.org include:_spf.smtp.com include:spf.hysing.is include:spf.protection.outlook.com -all | |
| s4s.is | TXT | 0 | MS=ms80647242 | |
| s4s.is | TXT | 0 | google-site-verification=0n-rkJSsxsZZaH643GNDRXMSGTM-DzDDegg5UZFhB0Q | |
| s4s.is | TXT | 0 | rlsLLjwemxx5qo+SnIeOGIfNXev0OD9a0e/vcm3Abj4= | |
| s4s.is | NS | 0 | ns1.xnet.is | |
| s4s.is | NS | 0 | ns2.xnet.is | |
| s4s.is | SOA | 3600 | ns1.xnet.is admin.netheimur.is 2026091300 86400 7200 3600000 3600 | |
| www.s4s.is | CNAME | 0 | s4s.is | |
| www.s4s.is | TXT | 0 | google-site-verification=0n-rkJSsxsZZaH643GNDRXMSGTM-DzDDegg5UZFhB0Q | |
| www.s4s.is | TXT | 0 | globalsign-domain-verification=8508CB91CD8323A8A7DEB35F2B8A3737 | |
| www.s4s.is | TXT | 0 | v=spf1 include:spf.xnet.is include:mailgun.org include:_spf.smtp.com include:spf.hysing.is include:spf.protection.outlook.com -all | |
| www.s4s.is | TXT | 0 | rlsLLjwemxx5qo+SnIeOGIfNXev0OD9a0e/vcm3Abj4= | |
| www.s4s.is | TXT | 0 | MS=ms80647242 | |
| www.s4s.is | NS | 0 | ns2.xnet.is | |
| www.s4s.is | NS | 0 | ns1.xnet.is | |
| www.s4s.is | A | 0 | 185.248.123.61 | |
| www.s4s.is | SOA | 3600 | ns1.xnet.is admin.netheimur.is 2026091300 86400 7200 3600000 3600 | |
| www.s4s.is | MX | 0 | 10 | s4s-is.mail.protection.outlook.com |
Get alerted the moment s4s.is's DNS changes
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DNS changes
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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