sosu-syd.dk is a .dk domain served by 2 nameservers (ns1.esis.dk, ns2.esis.dk). It was registered on 16 August 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.103.46.109 is hosted by FIBIA P/S (AS44869) in Denmark. Mail is handled by sosusyd-dk01b.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.esis.dk | 185.19.134.2 | ns1.esis.dk | AS199374 Syddansk Erhvervsskole Odense-Vejle |
| ns2.esis.dk | 185.19.134.3 | ns2.esis.dk | AS199374 Syddansk Erhvervsskole Odense-Vejle |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 5.103.46.109 | 1800s | server6109.serverpark.dk | AS44869 | FIBIA P/S | 5.103.0.0/16 | 🇩🇰 Denmark | Ringsted |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 185.19.135.52 |
| TXT Record |
|---|
| _globalsign-domain-verification=8Agq8j6d9iz24Mredufg-zA3vTUogse82AS6Pw4w6N |
| _globalsign-domain-verification=TT_iVzN6_0n9iZ5EDIDfMK4Tpt_G-EjZ7cljtj5LJ0 |
| 9td7g52u1lm5usqinfpkc987km |
| apple-domain-verification=QeKx1vgcbmqCmYaH |
| f1nfov7oaf7r8u51an9oodtpg8 |
| facebook-domain-verification=enby38fbt8b57o9s5a8jpqvnp3suw4 |
| facebook-domain-verification=nkfxls2zwq1ri3b86kztyryz8e8kep |
| have-i-been-pwned-verification=a9847614c2467559feac7138fb5f7e29 |
| iqgnsl2mu0j8r9mm1k1nl6t42v |
| MS=ms23835446 |
| nuSlKFgtI5Sj3BRgs3z6YDoHA8d49252pP+2RwLukMVcd7w0HpGcI9I+7Xtrx4o5Zwv7vR4MALVvIc+AQg39hw== |
| OAHbMusbamYHUQ5fk5dImWV5s7O0lxSPXkIiHfL0yTJ5EUU79Y5zHeIeLZwIZqDxRPkyiEiyh71yulyhLG2M5g== |
| pSuoq4VfBPEEkLyC3VHrELofbkj9qdnoo4qZfIdE9ERC7q5cCZUEZVMVkEEBOAgWogJvvAvXFu/tgGA9IKNtoA= |
| pSuoq4VfBPEEkLyC3VHrELofbkj9qdnoo4qZfIdE9ERC7q5cCZUEZVMVkEEBOAgWogJvvAvXFu/tgGA9IKNtoA== |
| v=spf1 ip4:185.19.135.52 ip4:86.48.37.184 include:spf.esis.dk include:spf.mandrillapp.com include:spf.ubivox.com -all |
| Policy | Record (sosu-syd.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:185.19.135.52 ip4:86.48.37.184 include:spf.esis.dk include:spf.mandrillapp.com include:spf.ubivox.com -all |
| Policy | Record (_dmarc.sosu-syd.dk) |
|---|---|
| p=reject | v=DMARC1;p=reject;sp=reject;rua=mailto:be7762a8bd@rua.easydmarc.eu;ruf=mailto:be7762a8bd@ruf.easydmarc.eu;fo=1 |
| www | 5.103.46.109 (AS44869) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 50 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-sosusyd-dk01b._domainkey.sosusyd.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-sosusyd-dk01b._domainkey.sosusyd.onmicrosoft.com | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 4/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026052767 |
| Primary NS (MNAME) | ns1.esis.dk |
| Responsible (RNAME) | hostmaster |
| Refresh | 900s |
| Retry | 600s |
| Expire | 86400s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | INTERNET 123 ApS |
| Registered | 2006-08-16 |
| Expires | 2027-08-31 (311d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Domain | Registrar |
|---|---|
| socialogsundhedsskolen-syd.dk | Punktum dk A/S (direct) |
| sosu-aabenraa.dk | Punktum dk A/S (direct) |
| sosusyd.dk | INTERNET 123 ApS |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-23 03:13:12 | 566ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-21 22:59:09 | 3417ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-17 09:45:19 | 3573ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-16 09:28:40 | 4610ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-15 08:15:06 | 2163ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-13 06:48:17 | 1270ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-11 04:45:35 | 3357ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 19:31:47 | 4277ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-05 14:38:26 | 3473ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-04 14:37:18 | 1356ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 14:14:39 | 963ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 04:28:28 | 1473ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 03:06:03 | 953ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 03:40:56 | 1026ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 02:47:43 | 1077ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-17 23:10:37 | 1512ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-16 15:09:25 | 993ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-09 19:21:54 | 1617ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-05 15:21:39 | 1303ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-29 02:24:11 | 1408ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 00:35:41 | 858ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 21:16:57 | 3025ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 16:58:49 | 933ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-25 06:06:00 shown | 4506ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-24 03:03:33 | 1349ms | 2 NS 1 A 1 MX | 🔒 Secure |