konstant.dk is a .dk domain served by 2 nameservers (ns.scannet2.dk, ns2.scannet2.dk). It was registered on 29 December 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.103.39.137 is hosted by FIBIA P/S (AS44869) in Denmark. Mail is handled by konstant-dk.a-v1.mx.microsoft. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 5.103.39.137 | 3600s | 5.103.39.137.static.fibianet.dk | AS44869 | FIBIA P/S | 5.103.0.0/16 | 🇩🇰 Denmark | Holbæk |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.136 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 100 | 1 | 443 | autodiscover.nrgi.dk |
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| _qz6xoscf6fhiga88v4k7rfffkva9j2g |
| atlassian-domain-verification=ybKIsu5ATeKc4mKAcPSR3xqFIB701SlnmH1NBNl3SnKCko624iUHottOTJmqeLxU |
| google-site-verification=6W_PP1rL0vOQnIiBOvk6tf2QUBKaL9yZM_doLsIcEKY |
| google-site-verification=HyIHgtCBJakNUiU812Wiws3d0abUP88dJ2NbeseQFQE |
| MS=ms84018289 |
| rvAfKR7IOxykk9Wm+45qHVg8IOlzA2pvIvetd2GlNoBhwiUO4gZUfDobIPMjeW/RvnMGVYV68b8Zv30oBIlmLA== |
| v=spf1 include:_spf55910.spf-protect.dk include:spf.protection.outlook.com -all |
| Policy | Record (konstant.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf55910.spf-protect.dk include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.konstant.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:66e1b0706e8e3@dmarc-dk.centerasecurity.com; pct=100; fo=1; |
| www CNAME | konstant.dk (all on konstant.dk) → 5.103.39.137 (AS44869) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 3/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.konstant-dk.a-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | C1AD7778796D20BCA65C889A26550211… |
| SMTP _25._tcp.konstant-dk.a-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | EA7A25255D111FC3CE4CB8FABE3ADF9C… |
| SMTP _25._tcp.konstant-dk.a-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | 54883CC5F1849331E6BF5002C3129D20… |
| SMTP _25._tcp.konstant-dk.a-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | 803F7447CC75B208DBCA042346F5D8DF… |
| HTTPS _443._tcp.konstant.dk | DANE-EE · SPKI · SHA-256 | 5FFA07F15E7EABB8B3251CDCAAD8EAEA… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101301 |
| Primary NS (MNAME) | ns.scannet2.dk |
| Responsible (RNAME) | hostmaster@scannet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1998-12-29 |
| Expires | 2026-12-31 (68d) |
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 06:40:15 | 548ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-14 05:40:31 shown | 509ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-03 13:18:54 | 580ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 02:57:09 | 788ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 20:45:05 | 716ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-19 22:20:45 | 2854ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 23:17:14 | 1068ms | 2 NS 1 A 1 MX | 🔒 Secure |