btb2021.dk

📜 Historical scan 2026-08-22 12:30:23 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

btb2021.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was registered on 5 November 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 85.235.243.20 is hosted by Norlys Telco A/S (AS3308) in Denmark. 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.

🖥️ Nameservers#

2 records 257ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.dandomain.dk	185.25.141.3 2a02:2339:4006:109::dd	ns.dandomain.dk ns.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.dandomain.dk	2a02:2339:1:108::dd:dd 91.197.248.66	ns2.dandomain.dk ns2.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 292ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
85.235.243.20	3600s	20.0-127.243.235.85.in-addr.arpa nyhedsbrev.odsgard.dk	AS3308	Norlys Telco A/S	85.235.224.0/19	🇩🇰 Denmark	Hørsholm

📧 MX Records#

📧

No MX records found

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	85.235.243.20
🔶 Autoconfig	85.235.243.20

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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#

latest probe, not this scan · checked 2026-10-09 15:43:18

www	85.235.243.20 (AS3308) (address records, no CNAME)
www vs bare domain	Same network btb2021.dk: 85.235.243.20 (AS3308) www.btb2021.dk: 85.235.243.20 (AS3308)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

565ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026082101
Primary NS (MNAME)	ns.dandomain.dk
Responsible (RNAME)	hostmaster@dandomain.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-16 01:54:38

Field	Value
Registrar	DANDOMAIN A/S
Registered	2020-11-05
Expires	2026-11-30 (40d)

🔗 Same registrant#

44 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
aaretsbyggeri.dk	Punktum dk A/S (direct)
aaretsuderum.dk	DANDOMAIN A/S
ballerupnyt.dk	DANDOMAIN A/S
ballerupweekend.dk	DANDOMAIN A/S
bas.dk	Punktum dk A/S (direct)
brøndbynyt.dk	DANDOMAIN A/S
btb2022.dk	DANDOMAIN A/S
btb2024.dk	DANDOMAIN A/S
byensboligforeninger.dk	Punktum dk A/S (direct)
byggewatch.dk	Punktum dk A/S (direct)
bygtv.dk	Punktum dk A/S (direct)
bygwatch.dk	Punktum dk A/S (direct)
cphweekend.dk	DANDOMAIN A/S
crimecode.dk	Punktum dk A/S (direct)
cybergames.dk	Punktum dk A/S (direct)
fagfolk.dk	Punktum dk A/S (direct)
foodm.dk	Punktum dk A/S (direct)
foodmarkedet.dk	Punktum dk A/S (direct)
gonetwork.dk	DANDOMAIN A/S
gotonetwork.dk	DANDOMAIN A/S
hr-regnskab.dk	DANDOMAIN A/S
hvidovreweekend.dk	DANDOMAIN A/S
hårdttræ.dk	Punktum dk A/S (direct)
irum.dk	Punktum dk A/S (direct)
ishojnyt.dk	DANDOMAIN A/S
køgeweekend.dk	DANDOMAIN A/S
logistik-magasinet.dk	Punktum dk A/S (direct)
ltl.dk	Punktum dk A/S (direct)
mester-svend.dk	Punktum dk A/S (direct)
mesterogsvend.dk	Punktum dk A/S (direct)
packm.dk	Punktum dk A/S (direct)
peterodsgard.dk	Punktum dk A/S (direct)
rodovrenyt.dk	DANDOMAIN A/S
sikkerhed.dk	Punktum dk A/S (direct)
skolemagasin.dk	Punktum dk A/S (direct)
tømmerhandel.dk	Punktum dk A/S (direct)
ue-medier.dk	Punktum dk A/S (direct)
uemedier.dk	Punktum dk A/S (direct)
ugenserhverv.dk	Punktum dk A/S (direct)
vallensbaekweekend.dk	DANDOMAIN A/S
vallensbækweekend.dk	DANDOMAIN A/S
vestegnenskonferencecenter.dk	DANDOMAIN A/S
værktøjstest.dk	Punktum dk A/S (direct)
åretsbyggeri.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

257ms

292ms

262ms

AAAA

275ms

TXT

1092ms

CAA

266ms

HTTPS

276ms

TLSA

303ms

SOA

0ms

MTA-STS

365ms

DNSSEC

565ms

SRV

324ms

Total

5162ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 11:48:08	402ms	2 NS 1 A 0 MX	🔒 Secure
2026-09-01 07:01:32	562ms	2 NS 1 A 0 MX	🔒 Secure
2026-08-22 12:30:23 shown	5162ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-26 21:09:34	479ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-23 13:52:46	617ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-23 10:42:59	1171ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 17:48:10	2354ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-16 17:45:15	1142ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-16 17:30:20	413ms	2 NS 1 A 0 MX	🔒 Secure