blue-line.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 26 June 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by blue-line-dk.mx1.comendosystems.com, blue-line-dk.mx2.comendosystems.net. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.simply.com | — | — | — |
| ns2.simply.com | — | — | — |
| ns3.simply.com | — | — | — |
| ns4.simply.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 141.193.213.10 | — | — | AS209242 | — | — | — | — |
| 141.193.213.11 | — | — | AS209242 | — | — | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | blue-line-dk.mx1.comendosystems.com | 192.162.219.255 | mx41.electric.net | AS16509 Amazon.com, Inc. |
| 20 | — | blue-line-dk.mx2.comendosystems.net | 192.162.219.155 | mx41.electric.net | AS16509 Amazon.com, Inc. |
| TXT Record |
|---|
| google-site-verification=C33MYKjZM4ZqOVFbuSUo_f8iP7qvzo50XlZP8-dcTiQ |
| MS=ms80417913 |
| v=spf1 include:spf.comendosystems.com ip4:195.74.34.66 ip4:77.66.124.105 ip4:159.253.93.52 ip4:93.191.156.84 ip4:147.253.222.195 ip4:34.76.222.38 include:servers.mcsv.net include:spf.mailanyone.net include:spf.protection.outlook.com include:relay.mailchannels.net -all |
| Policy | Record (blue-line.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.comendosystems.com ip4:195.74.34.66 ip4:77.66.124.105 ip4:159.253.93.52 ip4:93.191.156.84 ip4:147.253.222.195 ip4:34.76.222.38 include:servers.mcsv.net include:spf.mailanyone.net include:spf.protection.outlook.com include:relay.mailchannels.net -all |
| Policy | Record (_dmarc.blue-line.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:dmarc@blue-line.dk |
| www | 141.193.213.10 141.193.213.11 (AS209242) (address records, no CNAME) |
| www vs bare domain | Same network blue-line.dk: 141.193.213.10 141.193.213.11 (AS209242) www.blue-line.dk: 141.193.213.10 141.193.213.11 (AS209242) |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| k1 | dkim.mcsv.net | 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: 7/10 · 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 | 2025110304 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 1998-06-26 |
| Expires | 2027-06-30 (251d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 18:08:22 | 1587ms | 4 NS 2 A 2 MX | 🔒 Secure |
| 2026-10-03 17:55:21 | 950ms | 4 NS 2 A 2 MX | 🔒 Secure |
| 2026-10-02 09:56:36 | 1064ms | 4 NS 2 A 2 MX | 🔒 Secure |
| 2026-09-24 08:36:53 | 936ms | 4 NS 2 A 2 MX | 🔒 Secure |
| 2026-08-26 22:08:51 | 888ms | 4 NS 2 A 2 MX | 🔒 Secure |
| 2026-08-14 22:29:09 | 17430ms | 4 NS 2 A 2 MX | 🔒 Secure |
| 2026-06-26 00:54:48 | 817ms | 4 NS 2 A 2 MX | 🔒 Secure |
| 2026-06-21 22:54:32 | 1174ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 13:15:13 | 844ms | 4 NS 2 A 2 MX | 🔒 Secure |
| 2026-06-16 15:17:23 | 1905ms | 4 NS 2 A 2 MX | 🔒 Secure |
| 2026-06-16 15:12:21 | 2822ms | 4 NS 2 A 2 MX | 🔒 Secure |
| 2026-06-16 15:10:59 shown | 439ms | 4 NS 2 A 2 MX | 🔒 Secure |
| 2026-06-16 15:00:28 | 4624ms | 4 NS 2 A 2 MX | 🔒 Secure |