struerborgerforening.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.55.100.171 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mail.struerborgerforening.dk. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 87.55.100.171 | 600s | 87-55-100-171-cable.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 87.48.0.0/13 | 🇩🇰 Denmark | Struer Municipality |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 5 | 600s | mail.struerborgerforening.dk | 87.55.100.171 | 87-55-100-171-cable.dk.customer.tdc.net | AS3292 TDC Holding A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | struerborgerforening.dk → 87.55.100.171 |
| 🔶 Autoconfig | struerborgerforening.dk → 87.55.100.171 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 10 | 443 | mail.struerborgerforening.dk |
| TXT Record |
|---|
| v=spf1 a mx a:struerborgerforening.dk ip4:87.55.100.171 ip6:fe80::baae:edff:fe7a:6e4 include:mail.dk -all |
| Policy | Record (struerborgerforening.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx a:struerborgerforening.dk ip4:87.55.100.171 ip6:fe80::baae:edff:fe7a:6e4 include:mail.dk -all |
| Policy | Record (_dmarc.struerborgerforening.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; pct=100; ruf=mailto:postmaster@struerborgerforening.dk; rua=mailto:postmaster@struerborgerforening.dk |
| www CNAME | struerborgerforening.dk (all on struerborgerforening.dk) → 87.55.100.171 (AS3292) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 5/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.struerborgerforening.dk | struerborgerforening.dk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026092001 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 19:34:42 shown | 571ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 16:07:03 | 639ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-22 01:31:13 | 639ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-02 00:38:20 | 548ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 12:53:31 | 746ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 00:35:02 | 505ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 15:39:21 | 565ms | 2 NS 1 A 1 MX | 🔒 Secure |