tss.dk is a .dk domain served by 3 nameservers (ns.efif.dk, ns2.efif.dk, ns3.efif.dk). It was registered on 4 July 1995 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 178.251.4.118 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by tss-dk.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 |
|---|---|---|---|
| ns.efif.dk | 195.254.168.23 | ns.efif.dk | AS51073 Aarhus Business College |
| ns2.efif.dk | 195.254.168.12 | ns2.efif.dk | AS51073 Aarhus Business College |
| ns3.efif.dk | 20.23.170.35 | — | AS8075 Microsoft Corporation |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 178.251.4.118 | 300s | vm0845.enterprisecloud.nu | AS48854 | team.blue Denmark A/S | 178.251.0.0/21 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.101.27.80 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| google-site-verification=UTlhFRopAZtGFdnUza8yfNsLAU3e2FeNpuYtaNwsnfw |
| MS=ms74336568 |
| QKwcwqkf53Az8v9p8YlF/d+yBzSkr32Ilv7VL+t1CnVV+eowTk0z1aP5+pee5k9XkFvEJlOch+xqvHB5TVxOVQ== |
| Teknisk Skole Silkeborg |
| uvmid=743401 |
| v=spf1 include:spf.protection.outlook.com include:_spf2.efif.dk include:sendgrid.net -all |
| Policy | Record (tss.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:_spf2.efif.dk include:sendgrid.net -all |
| Policy | Record (_dmarc.tss.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100; ruf=mailto:analyze@efif.dk; rua=mailto:analyze@efif.dk |
| www | 178.251.4.118 (AS48854) (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-tss-dk._domainkey.efif.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-tss-dk._domainkey.efif.onmicrosoft.com | RSA · ~1024 bit below 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 | 2013122229 |
| Primary NS (MNAME) | ns.efif.dk |
| Responsible (RNAME) | dns-zc@efif.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1995-07-04 |
| Expires | 2027-09-30 (348d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-16 13:19:28 | 3505ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-14 10:35:16 | 1135ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 23:05:31 | 3542ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-07 23:00:10 | 2960ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 20:45:25 | 1575ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 20:36:06 | 982ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 01:38:22 | 2240ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 01:01:09 | 2053ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-21 09:12:21 | 6826ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-14 07:11:27 | 1728ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-07 05:21:44 | 1597ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-04 07:32:58 | 1012ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-30 00:24:34 | 1012ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 12:57:49 | 1110ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-25 08:38:38 | 9039ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-19 04:38:47 | 10396ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-18 01:49:43 | 12150ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-13 18:16:04 | 5886ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-09 16:59:42 | 1585ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-07 16:50:11 | 18635ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-27 12:12:21 | 2887ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-24 11:05:03 shown | 5519ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-21 02:41:12 | 5330ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-16 04:53:06 | 9469ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-11 03:44:02 | 1430ms | 3 NS 1 A 1 MX | 🔒 Secure |