frontier.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was registered on 15 August 1995 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 157.245.22.188 is hosted by DigitalOcean, LLC (AS14061) in Germany. Mail is handled by frontier-dk.mail.protection.outlook.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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns.dandomain.dk | — | — | — |
| ns2.dandomain.dk | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 157.245.22.188 | — | — | AS14061 | DigitalOcean, LLC | 157.245.0.0/16 | 🇩🇪 Germany | Frankfurt am Main |
| TXT Record |
|---|
| apple-domain-verification=JovfbwmQhyofi0OA |
| MS=ms28849012 |
| openai-domain-verification=dv-la8qmhnIJu9nt8wvChYf69v0 |
| v=spf1 include:spf.protection.outlook.com ~all |
| Policy | Record (frontier.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.protection.outlook.com ~all |
| www CNAME | frontier.dk (all on frontier.dk) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u14191869.wl120.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u14191869.wl120.sendgrid.net | RSA · ~1024 bit below 2048 bit |
| selector1 | selector1-frontier-dk._domainkey.fimdk.onmicrosoft.com | RSA · ~1024 bit below 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: 1/10 · 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 | 2026060401 |
| Primary NS (MNAME) | ns.dandomain.dk |
| Responsible (RNAME) | hostmaster@dandomain.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 1995-08-15 |
| Expires | 2027-09-30 (346d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 17:55:29 | 1017ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 17:24:12 | 2354ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 20:34:16 | 1326ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 02:11:52 | 741ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 13:59:11 | 1207ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-19 19:18:08 | 836ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 09:23:52 shown | 995ms | 2 NS 1 A 1 MX | 🔒 Secure |