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. Its website address 141.193.213.10 is hosted by Cloudflare London, LLC (AS209242) in United States. 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 | Cloudflare London, LLC | 141.193.213.0/24 | 🇺🇸 United States | — |
| 141.193.213.11 | — | — | AS209242 | Cloudflare London, LLC | 141.193.213.0/24 | 🇺🇸 United States | — |
| 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 | 439ms | 4 NS 2 A 2 MX | 🔒 Secure |
| 2026-06-16 15:00:28 shown | 4624ms | 4 NS 2 A 2 MX | 🔒 Secure |