cirrus-consulting.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 5 June 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.61.83.98 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mail.protonmail.ch. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 87.61.83.98 | 3600s | 0x573d5362.static.cust.fastspeed.dk | AS3292 | TDC Holding A/S | 87.61.0.0/17 | 🇩🇰 Denmark | Holstebro |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 2 | 3600s | mail.protonmail.ch | 176.119.200.128 185.205.70.128 185.70.42.128 |
mail.protonmail.ch mail.protonmail.ch mail.protonmail.ch |
AS62371 Proton AG AS62371 Proton AG AS62371 Proton AG |
| TXT Record |
|---|
| protonmail-verification=d56499d4fe190dadbb9a7e0a6efae519c7ed7c16 |
| v=spf1 include:_spf.protonmail.ch -all |
| Policy | Record (cirrus-consulting.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.protonmail.ch -all |
| Policy | Record (_dmarc.cirrus-consulting.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:audit@cirrus-consulting.dk |
| www | 87.61.83.98 (AS3292) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| 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 |
DNS lookups: 2/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026081801 |
| 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 | 2014-06-05 |
| Expires | 2031-06-30 (1709d) |
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 |
|---|---|
| bronee.dk | Simply.com A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 13:18:49 | 420ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 01:57:38 | 855ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-11 23:24:17 | 666ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 19:23:59 | 721ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-19 08:34:16 shown | 2696ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 00:55:23 | 4754ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 13:55:47 | 1168ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 20:55:28 | 571ms | 4 NS 1 A 1 MX | 🔒 Secure |