buhlmann.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 18 January 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.76.21.34 is hosted by Liquid Web B.V. (AS202521) in United States. Mail is handled by scanner01.resennet.dk, scanner02.resennet.dk and 1 more. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 87.76.21.34 | 300s | cloudhost-11803623.nl-west-1.nxcli.net | AS202521 | Liquid Web B.V. | 87.76.21.0/24 | 🇺🇸 United States | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | scanner01.resennet.dk | 193.32.65.29 | scanner01.resennet.dk | AS3292 TDC Holding A/S |
| 20 | 300s | scanner02.resennet.dk | 193.32.65.29 | scanner01.resennet.dk | AS3292 TDC Holding A/S |
| 30 | 300s | scanner03.resennet.dk | 193.32.65.29 | scanner01.resennet.dk | AS3292 TDC Holding A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.149.136 |
| 🔶 Autoconfig | 87.76.21.34 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| google-site-verification=90SlXQNWVTq8KV3g0QH_vCrIyB6Gayj-yU9MDMCNWFA |
| v=spf1 include:spf.curanet.dk include:mail.zendesk.com include:spf.protection.outlook.com ip4:94.231.106.116 include:_spf.resennet.dk include:mail.techosting.dk include:spf.tigermedia.eu include:spf.eu.signature365.net ip4:3.78.148.39 -all |
| Policy | Record (buhlmann.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.curanet.dk include:mail.zendesk.com include:spf.protection.outlook.com ip4:94.231.106.116 include:_spf.resennet.dk include:mail.techosting.dk include:spf.tigermedia.eu include:spf.eu.signature365.net ip4:3.78.148.39 -all |
| Policy | Record (_dmarc.buhlmann.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | 87.76.21.34 (AS202521) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 10/10 · policy: -all
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026052502 |
| Primary NS (MNAME) | ns1.curanet.dk |
| Responsible (RNAME) | hostmaster@curanet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | CURANET A/S |
| Registered | 2013-01-18 |
| Expires | 2028-01-31 (471d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-29 17:21:57 | 1365ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 15:30:51 | 1101ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-24 03:21:06 | 1262ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-08 12:16:34 | 2185ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 23:09:01 | 1442ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-27 20:51:24 | 494ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-24 13:42:16 | 1293ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-26 17:58:02 | 2212ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-19 23:47:58 shown | 1192ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-16 17:44:40 | 1477ms | 2 NS 1 A 3 MX | ⚠️ Bogus |
| 2026-06-16 17:41:09 | 1119ms | 2 NS 1 A 3 MX | 🔒 Secure |