upsec.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 2 September 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.61.101.71 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by upsec.dk. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 87.61.101.71 | 43200s | 0x573d6547.static.cust.fastspeed.dk | AS3292 | TDC Holding A/S | 87.61.0.0/17 | 🇩🇰 Denmark | Aarhus |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 43200s | upsec.dk | 87.61.101.71 | 0x573d6547.static.cust.fastspeed.dk | AS3292 TDC Holding A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 87.61.101.71 |
| 🔶 Autoconfig | 87.61.101.71 |
| TXT Record |
|---|
| v=spf1 ip4:79.142.224.25 mx a:smtp.bolignet.dk a:smtp1.bolignet.dk a:mail.bolignet.dk a:smtp.3.dk ip4:79.142.232.v=spf1 ip6:2a02:2190::/29 mx a:smtp1.bolignet.dk a:smtp2.bolignet.dk a:mail.bolignet.dk a:smtp.3.dk ip4:87.62.120.205 ip4:87.61.101.71 ip4:100.72.227.106 ptr:upsec.dk ~all66 ptr:upsec.dk +all |
| Policy | Record (upsec.dk) |
|---|---|
| +all (no restriction) | v=spf1 ip4:79.142.224.25 mx a:smtp.bolignet.dk a:smtp1.bolignet.dk a:mail.bolignet.dk a:smtp.3.dk ip4:79.142.232.v=spf1 ip6:2a02:2190::/29 mx a:smtp1.bolignet.dk a:smtp2.bolignet.dk a:mail.bolignet.dk a:smtp.3.dk ip4:87.62.120.205 ip4:87.61.101.71 ip4:100.72.227.106 ptr:upsec.dk ~all66 ptr:upsec.dk +all |
| www | 80.248.139.139 (AS216275) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 12/10 · policy: +all
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026071201 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2016-09-02 |
| Expires | 2027-09-30 (340d) |
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 |
|---|---|---|---|
| 2026-10-12 03:43:04 | 455ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 13:15:18 | 2564ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 13:29:58 | 2534ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-13 10:32:27 | 4008ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-07 20:43:19 | 703ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 05:02:23 | 1631ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-11 18:42:16 | 1180ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-17 18:24:20 | 704ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-14 07:47:19 shown | 8570ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 09:41:35 | 1512ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 14:53:12 | 855ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 08:45:43 | 926ms | 2 NS 1 A 1 MX | 🔒 Secure |