ulrich-el.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 25 September 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 37.205.123.226 is hosted by GlobalConnect A/S (AS42525) in Denmark. Mail is handled by eu-esec-01.heimdalsecurity.com, eu-esec-02.heimdalsecurity.com. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 37.205.123.226 | 3600s | — | AS42525 | GlobalConnect A/S | 37.205.120.0/21 | 🇩🇰 Denmark | Albertslund |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 10 | 443 | hosting.maack-it.dk |
| TXT Record |
|---|
| v=spf1 a a:post.maack-it.dk include:spf-esec.heimdalsecurity.com -all |
| Policy | Record (ulrich-el.dk) |
|---|---|
| -all (hard fail) | v=spf1 a a:post.maack-it.dk include:spf-esec.heimdalsecurity.com -all |
| www | 37.205.123.226 (AS42525) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 3/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.eu-esec-01.heimdalsecurity.com | DANE-EE · SPKI · SHA-256 | 2E8933DD6DB99304A5A9D5C4ECDE7B8E… |
| SMTP _25._tcp.eu-esec-02.heimdalsecurity.com | DANE-EE · SPKI · SHA-256 | 2E8933DD6DB99304A5A9D5C4ECDE7B8E… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100901 |
| 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 | 2004-09-25 |
| Expires | 2027-09-30 (346d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 23:18:26 shown | 1936ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-05 17:56:40 | 2558ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-03 17:44:25 | 574ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-01 00:50:54 | 2474ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-30 00:40:46 | 4343ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-19 16:58:10 | 649ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 22:13:21 | 1010ms | 2 NS 1 A 2 MX | 🔒 Secure |