jacon.dk is a .dk domain served by 2 nameservers (ns07.sac-it.dk, ns08.sac-it.dk). It was registered on 20 December 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 178.251.4.112 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx1-dk.centerasecurity.dk, mx2-dk.centerasecurity.dk and 1 more. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|
| ns07.sac-it.dk | 85.235.243.63 | ns07.sac-it.dk | AS3308 Norlys Telco A/S |
| ns08.sac-it.dk | 128.76.60.63 | ns08.sac-it.dk | AS3292 TDC Holding A/S |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 178.251.4.112 | 2277s | web1.bilinfo.dk | AS48854 | team.blue Denmark A/S | 178.251.0.0/21 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.149.136 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| google-site-verification=K24NFI2rxGNVvt19B6U3P2CnKCTiqbKFo-V11GlCnhg |
| v=spf1 ip4:194.182.254.0/24 ip4:195.81.252.0/23 include:spf.unoeuro.com include:spf.protection.outlook.com include:_spf.centerasecurity.dk -all |
| Policy | Record (jacon.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:194.182.254.0/24 ip4:195.81.252.0/23 include:spf.unoeuro.com include:spf.protection.outlook.com include:_spf.centerasecurity.dk -all |
| Policy | Record (_dmarc.jacon.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:sacadmin@jacon.dk; |
| www | 178.251.4.112 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
DNS lookups: 4/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx3-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx3-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026100801 |
| Primary NS (MNAME) | ns07.sac-it.dk |
| Responsible (RNAME) | hostmaster@jacon.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | SAC-IT A/S |
| Registered | 1999-12-20 |
| Expires | 2026-12-31 (75d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 23:06:28 | 1669ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-09 16:05:10 shown | 712ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-01 04:21:48 | 1378ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-24 02:31:31 | 672ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-18 16:13:25 | 1389ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-12 21:48:53 | 1029ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-07 00:00:12 | 2198ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-28 02:26:41 | 751ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-20 19:57:39 | 1547ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-13 03:25:18 | 3370ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-09 05:41:30 | 25158ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-30 15:52:23 | 9188ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-23 14:42:28 | 9304ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-16 06:10:11 | 2187ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-09 04:39:27 | 18118ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-02 08:56:53 | 745ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-24 17:05:21 | 1911ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-22 22:07:47 | 837ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-18 00:16:59 | 1116ms | 2 NS 1 A 3 MX | 🔓 Insecure |