jtnbyg.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 7 December 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 109.71.58.180 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by jtnbyg-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 109.71.58.180 | 3600s | plesk1.optimized.dk | AS48854 | team.blue Denmark A/S | 109.71.56.0/21 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| TXT Record |
|---|
| MS=ms38457904 |
| v=spf1 include:spf.protection.outlook.com include:relay.kinstamailservice.com include:relay.mailchannels.net ip4:162.159.134.42 ~all |
| Policy | Record (jtnbyg.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.protection.outlook.com include:relay.kinstamailservice.com include:relay.mailchannels.net ip4:162.159.134.42 ~all |
| www CNAME | jtnbyg.dk (all on jtnbyg.dk) → 109.71.58.180 (AS48854) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 3/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026101200 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2023-12-07 |
| Expires | 2026-12-06 (49d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 21:58:09 shown | 2103ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-04 06:10:24 | 663ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 06:00:57 | 754ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 07:53:46 | 882ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-25 10:53:06 | 1308ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-06 15:51:03 | 1377ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 04:02:02 | 1223ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 16:58:18 | 866ms | 2 NS 1 A 1 MX | 🔒 Secure |