overtag.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 8 November 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 37.139.19.237 is hosted by DigitalOcean, LLC (AS14061) in The Netherlands. Mail is handled by in1-smtp.messagingengine.com, in2-smtp.messagingengine.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 |
|---|---|---|---|---|---|---|---|
| 37.139.19.237 | 43200s | — | AS14061 | DigitalOcean, LLC | 37.139.0.0/19 | 🇳🇱 The Netherlands | Amsterdam |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 37.139.19.237 |
| 🔶 Autoconfig | 37.139.19.237 |
| TXT Record |
|---|
| v=spf1 include:sendgrid.net include:spf.messagingengine.com ~all |
| Policy | Record (overtag.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:sendgrid.net include:spf.messagingengine.com ~all |
| www | 37.139.19.237 (AS14061) (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 |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u36558003.wl004.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u36558003.wl004.sendgrid.net | 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: 3/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026102001 |
| 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 | 2000-11-08 |
| Expires | 2026-12-31 (71d) |
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).
| Domain | Registrar |
|---|---|
| homepark.dk | Punktum dk A/S (direct) |
| livsruten.dk | Simply.com A/S |
| retsf.dk | Simply.com A/S |
| smykkesutter.dk | Punktum dk A/S (direct) |
| uu.dk | Simply.com A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-20 17:04:12 shown | 913ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-09 11:43:35 | 1085ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-24 04:32:03 | 1943ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-01 17:15:28 | 1034ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 11:53:39 | 2695ms | 2 NS 1 A 2 MX | 🔒 Secure |