bytteguiden.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 7 December 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.48.142.40 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by bytteguiden-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 |
|---|---|---|---|
| ns1.simply.com | — | — | — |
| ns2.simply.com | — | — | — |
| ns3.simply.com | — | — | — |
| ns4.simply.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 87.48.142.40 | — | — | AS3292 | TDC Holding A/S | 87.48.0.0/13 | 🇩🇰 Denmark | Havdrup |
| TXT Record |
|---|
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (bytteguiden.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | 87.48.142.40 (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: 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 | 2022020304 |
| 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 | 2009-12-07 |
| Expires | 2026-12-31 (67d) |
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 |
|---|---|
| administrations-selskabet.dk | Simply.com A/S |
| adms.dk | Simply.com A/S |
| econo.dk | Simply.com A/S |
| freekon.dk | Simply.com A/S |
| kundekartotek.dk | Simply.com A/S |
| virksomhedsbasen.dk | Simply.com A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-21 17:52:40 | 497ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-12 13:50:17 | 1173ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 06:40:07 | 1046ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 09:02:13 | 1148ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 06:41:16 | 704ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-13 19:17:03 | 1455ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-10 00:07:42 | 764ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 18:30:59 | 1704ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 02:31:46 | 930ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 03:23:42 | 955ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 18:40:42 | 1716ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 18:31:32 | 4034ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 18:31:03 shown | 851ms | 4 NS 1 A 1 MX | 🔒 Secure |