holboell.dk is a .dk domain served by 3 nameservers (ns1.hostbase.dk, ns2.hostbase.dk, ns3.hostbase.dk). It was registered on 20 January 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.106.67 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by holboell-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.hostbase.dk | 185.103.123.13 | — | AS204171 TD-K A/S |
| ns2.hostbase.dk | 185.103.123.14 | — | AS204171 TD-K A/S |
| ns3.hostbase.dk | 185.150.199.99 | — | AS202914 Adeo Datacenter ApS |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 94.231.106.67 | 3600s | linux207.curanet.dk | AS48854 | team.blue Denmark A/S | 94.231.96.0/20 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.149.136 |
| TXT Record |
|---|
| v=spf1 ip4:20.105.189.48 ip4:185.103.121.9 include:spf.protection.outlook.com include:spf.eu.exclaimer.net include:hostbase.dk -all |
| Policy | Record (holboell.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:20.105.189.48 ip4:185.103.121.9 include:spf.protection.outlook.com include:spf.eu.exclaimer.net include:hostbase.dk -all |
| Policy | Record (_dmarc.holboell.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:dmarc@td-k.dk; ruf=mailto:dmarc@td-k.dk; adkim=s; aspf=s; fo=0:1:d:s; |
| www | 94.231.106.67 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-holboell-dk._domainkey.holboell.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-holboell-dk._domainkey.holboell.onmicrosoft.com | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 4/10 · policy: -all
No problems found| 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 | 61 |
| Primary NS (MNAME) | ns1.hostbase.dk |
| Responsible (RNAME) | hostmaster@hostbase.local |
| Refresh | 900s |
| Retry | 600s |
| Expire | 86400s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1999-01-20 |
| Expires | 2027-03-31 (165d) |
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 |
|---|---|---|---|
| 2026-10-07 17:05:35 shown | 1028ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 00:10:41 | 10936ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-31 11:40:16 | 1025ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-24 07:19:08 | 836ms | 3 NS 1 A 1 MX | ❓ Unknown |
| 2026-06-20 14:16:25 | 7795ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-18 16:27:49 | 1901ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 13:15:01 | 270ms | 0 NS 0 A 0 MX | ❓ Unknown |