checkbit.dk

Records from scan: 2026-10-13 00:01:45 · 1144ms total · last checked 2026-10-17 04:50 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

checkbit.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 24 April 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.100.105.5 is hosted by DKTV A/S (AS15516) in Denmark. Mail is handled by checkbit-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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 52ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 37ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.100.105.5	3600s	91.100.105.5.generic-hostname.arrownet.dk	AS15516	DKTV A/S	91.100.0.0/15	🇩🇰 Denmark	Brønshøj

📧 MX Records#

1 records 39ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	checkbit-dk.mail.protection.outlook.com	2a01:111:f403:ca21::10 2a01:111:f403:ca48::8 2a01:111:f403:ca48::a 2a01:111:f403:ca48::e 52.101.103.39 52.101.68.39 52.101.73.120 52.101.91.21	mail-matpr05cu00100.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr03cu00206.inbound.protection.outlook.com mail-miypr05cu00207.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am7pr02cu00300.inbound.protection.outlook.com mail-matpr05cu00105.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 52.98.149.136
🔶 Autoconfig	checkbit.dk → 91.100.105.5

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 153ms

TXT Record
MS=ms28167286
v=spf1 ip4:91.100.105.5 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (checkbit.dk)
-all (hard fail)	v=spf1 ip4:91.100.105.5 include:spf.protection.outlook.com -all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

checked 2026-10-13 00:01:45

www CNAME	checkbit.dk (all on checkbit.dk) → 91.100.105.5 (AS15516)
www vs bare domain	Same network checkbit.dk: 91.100.105.5 (AS15516) www.checkbit.dk: 91.100.105.5 (AS15516)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.checkbit.dk	checkbit.dk

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

66ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

35ms

Field	Value
Serial	2026101201
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-13 00:19:35

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2002-04-24
Expires	2027-06-30 (256d)

🔗 Same registrant#

3 domains

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
bionicbitch.dk	Punktum dk A/S (direct)
welle-erdball.dk	Punktum dk A/S (direct)
welleerdball.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

52ms

37ms

39ms

AAAA

37ms

TXT

153ms

CAA

44ms

HTTPS

39ms

TLSA

604ms

SOA

35ms

MTA-STS

53ms

DNSSEC

66ms

SRV

54ms

Total

1144ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 00:01:45 shown	1144ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-13 00:59:35	1777ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 13:37:19	1323ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-25 06:34:17	3351ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-12 23:03:56	4772ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-19 00:34:25	3131ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-14 10:10:18	9214ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-02 00:21:18	968ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 20:26:06	685ms	2 NS 1 A 1 MX	🔒 Secure