j-u.dk is a .dk domain served by 2 nameservers (ns1.nrd.dk, ns2.nrd.dk). It was registered on 2 April 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.8.38.8 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by ju-dk0c.u-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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.nrd.dk | 208.94.148.4 | ns10.dnsmadeeasy.com | AS16552 Tiggee LLC |
| ns2.nrd.dk | 208.80.124.4 | ns11.dnsmadeeasy.com | AS16552 Tiggee LLC |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 193.8.38.8 | 7200s | — | AS48854 | team.blue Denmark A/S | 193.8.38.0/24 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| _globalsign-domain-verification=Bvdi34n6Oa06lB8rHCO3ZdFYTuFUFmeYxk8vmYrc8a |
| _globalsign-domain-verification=XKSlTk-wlcCOqooYW8HUxVG2idEvjtp0uQRBuvi0Ga |
| IiHY/JPy1sjDeUFGpewetwC7FZ2t4XV2V5c57mhfo2QTcGF5ELVk+/2//tB6kAAKYP8349EMqvtieWSxSMdrkw== |
| MS=ms95644558 |
| v=spf1 include:_spf51240.spfprotect.com -all |
| Policy | Record (j-u.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf51240.spfprotect.com -all |
| Policy | Record (_dmarc.j-u.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:661d22e5cdab5@dmarc-dk.centerasecurity.com; |
| www | 193.8.38.8 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · 8-byte salt · opt-out RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 2/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.ju-dk0c.u-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | EA7A25255D111FC3CE4CB8FABE3ADF9C… |
| SMTP _25._tcp.ju-dk0c.u-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | 54883CC5F1849331E6BF5002C3129D20… |
| SMTP _25._tcp.ju-dk0c.u-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | 803F7447CC75B208DBCA042346F5D8DF… |
| SMTP _25._tcp.ju-dk0c.u-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | C1AD7778796D20BCA65C889A26550211… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2009010409 |
| Primary NS (MNAME) | ns10.dnsmadeeasy.com |
| Responsible (RNAME) | dns@dnsmadeeasy.com |
| Refresh | 43200s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 180s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2002-04-02 |
| Expires | 2028-06-30 (616d) |
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 |
|---|---|
| jorgensen-utoft.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-19 12:51:02 | 2026ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-18 12:12:36 | 708ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-17 11:54:09 | 529ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-16 11:32:10 | 1504ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-06 00:52:10 | 813ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-03 00:37:57 | 696ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 00:33:59 | 1106ms | 2 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-09-30 00:13:01 | 846ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 19:04:42 | 1002ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-28 18:54:35 | 1978ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 18:44:01 | 827ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 00:27:22 | 747ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-18 23:26:21 | 1218ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-13 00:39:24 shown | 3620ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-06 02:45:05 | 2056ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-30 02:30:33 | 1131ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-20 07:33:10 | 1504ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-17 19:00:40 | 4866ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-15 10:32:19 | 1143ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-13 21:39:00 | 9202ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-10 21:31:31 | 3213ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-08 01:34:40 | 1429ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-31 21:17:33 | 1234ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-25 08:35:52 | 24900ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-17 06:38:40 | 2952ms | 2 NS 1 A 1 MX | 🔒 Secure |