hssilkeborg.dk is a .dk domain served by 3 nameservers (ns.efif.dk, ns2.efif.dk, ns3.efif.dk). It was registered on 2 March 2010 (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 hssilkeborg-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 our latest 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 | 89.249.7.43 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | webmail.efif.dk |
| TXT Record |
|---|
| 73SHTZYPEjAyXTp8zNjV5H33PDFG3nfLodlzLSZU34jgm736CpBB47NUmsjKuf/j7AF5iiC0/pR56n7SAiIr3g== |
| Handelsskolen Silkeborg |
| MS=ms60273969 |
| v=spf1 redirect=_spf.efif.dk |
| Policy | Record (hssilkeborg.dk) |
|---|---|
| redirect=_spf.efif.dk | v=spf1 redirect=_spf.efif.dk |
| Policy | Record (_dmarc.hssilkeborg.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-hssilkeborg-dk._domainkey.efif.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-hssilkeborg-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: 3/10 · 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 | 2012012516 |
| 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 | 2010-03-02 |
| Expires | 2027-03-31 (165d) |
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 |
|---|---|---|---|
| 2026-10-15 07:31:10 shown | 5254ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-14 06:53:19 | 2183ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 14:30:02 | 2825ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-06 12:51:43 | 1106ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-03 12:15:28 | 1223ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-28 11:48:51 | 1977ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 11:38:50 | 2532ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 11:05:29 | 2013ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-20 22:34:45 | 4920ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-18 18:50:49 | 1571ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-11 16:34:23 | 1088ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-04 16:28:13 | 1236ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-30 21:12:43 | 3935ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 13:34:48 | 1267ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-24 15:57:14 | 2743ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-19 08:55:01 | 3047ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-18 08:52:55 | 3287ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-15 02:23:40 | 1435ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-08 14:38:55 | 1345ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-07 10:28:17 | 3440ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-02 15:24:08 | 2548ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-31 05:02:10 | 8935ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-27 11:11:00 | 2594ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-23 07:14:53 | 11976ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-22 05:27:17 | 10844ms | 3 NS 1 A 1 MX | 🔒 Secure |