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Hosting & Network
du.se runs on AS1653, with email configured.
- Hosting network
- AS1653AS1653
- Managed DNS
- Self-hosted / other
- Configured
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 592 other sites on AS1653. Stable here since we started watching (Oct 7, 2026).
The apex and www are the same hosting — the apex via A records.
DNS Records for du.se
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| du.se | A | 0 | 130.243.57.42 | |
| du.se | MX | 0 | 10 | mailfilter-ng-1.sunet.se |
| du.se | MX | 0 | 10 | mailfilter-ng-4.sunet.se |
| du.se | MX | 0 | 10 | mailfilter-ng-3.sunet.se |
| du.se | NS | 0 | ns2.du.se | |
| du.se | NS | 0 | ns1.du.se | |
| du.se | NS | 0 | sunic.sunet.se | |
| du.se | SOA | 3600 | ns1.du.se domainmaster.du.se 2026110202 14400 3600 2592000 3600 | |
| du.se | TXT | 0 | //GI0qDniDS/S0i2yqgR7raOazlnJqQMNaDDZrIo+JcHp1dcqm/iLuTnwC/112r8IiUEpotJhkDdufuB2373rg== | |
| du.se | TXT | 0 | apple-domain-verification=yGLeeLc2cOGCl3iz | |
| du.se | TXT | 0 | 666d9d0d022f48c39d5e2ea3880041da | |
| du.se | TXT | 0 | rhino_accounts=b5b01f18fd17b671f04d22167706d9ad | |
| du.se | TXT | 0 | google-site-verification=PyolGwTwx-chIFNGyrBwkmDdK-VT1Ikjn5oKfOYB9L4 | |
| du.se | TXT | 0 | google-site-verification=eKcsxQZE-eWOZOsw7ixjp58XPmtjUxafDSdg5h4y5wY | |
| du.se | TXT | 0 | google-site-verification=5dwZood_ZNCtSnC37O9jxDWkdvQKhu76pQsxnHXiSz4 | |
| du.se | TXT | 0 | openai-domain-verification=dv-dLPAdGOF2xJ2Esv2x07PjZN1 | |
| du.se | TXT | 0 | google-site-verification=Ulmd9QKIZSbS7BkzKeGoJCEV1f1Rmcmn9Yu2-qTjnms | |
| du.se | TXT | 0 | MS=ms46237369 | |
| du.se | TXT | 0 | adobe-idp-site-verification=be5c06f625548c37489b3ff3a6fdc8ea2c4c05c7e7c88920f739ddccb00934c1 | |
| du.se | TXT | 0 | zoho-verification=zb77031365.zmverify.zoho.eu | |
| du.se | TXT | 0 | ZOOM_verify_czzo-oOkRLKk7_27T2D9_Q | |
| du.se | TXT | 0 | v=spf1 mx ip4:130.243.57.174 ip6:2001:6b0:12:8010::b0 ip4:130.243.58.134 ip6:2001:6b0:12:8020::13 ip4:130.243.58.96 ip6:2001:6b0:12:8020::11 ip4:35.156.249.23 ip4:35.157.192.32 ip4:35.157.47.202 ip4:35.157.87.137 ip4:130.243.58.175 ip4:82.196.180.210 ip6:2001:6b0:12:8020::14 include:spf.protection.outlook.com include:all._spf.plma.se include:spf.mandrillapp.com include:mail.koha-ptfs.co.uk -all | |
| du.se | TXT | 0 | autodesk-domain-verification=Gep9V6HYgs6lAfx1zcuJ | |
| www.du.se | A | 0 | 130.243.57.42 |
Get alerted the moment du.se's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch du.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
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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