co-working.dk

📜 Historical scan 2026-06-16 21:31:04 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

co-working.dk is a .dk domain served by 3 nameservers (ns.udag.de, ns.udag.net, ns.udag.org). It was registered on 31 August 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 89.31.143.1 is hosted by united-domains GmbH (AS202108) in Germany. Mail is handled by mx00.udag.de, mx01.udag.de. The zone is not DNSSEC-signed, 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#

3 records 90ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.udag.de	—	—	—
ns.udag.net	—	—	—
ns.udag.org	—	—	—

🌍 A Records#

1 records 79ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
89.31.143.1	—	www.udag.de	AS202108	united-domains GmbH	89.31.142.0/23	🇩🇪 Germany	—

📧 MX Records#

2 records 84ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mx00.udag.de	62.146.106.39	mx00.udag.de	AS15598 NorthC Deutschland GmbH
20	—	mx01.udag.de	62.146.106.40	mx01.udag.de	AS15598 NorthC Deutschland GmbH

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 194ms

TXT Record
v=spf1 include:_smtp.udag.de ~all

✉️ SPF#

Policy	Record (co-working.dk)
~all (soft fail)	v=spf1 include:_smtp.udag.de ~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#

latest probe, not this scan · checked 2026-10-10 00:39:22

www	89.31.143.1 (AS202108) (address records, no CNAME)
www vs bare domain	Same network co-working.dk: 89.31.143.1 (AS202108) www.co-working.dk: 89.31.143.1 (AS202108)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

182ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

90ms

Field	Value
Serial	2023062202
Primary NS (MNAME)	ns.udag.de
Responsible (RNAME)	hostmaster@united-domains.de
Refresh	10800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-08 18:52:56

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2012-08-31
Expires	2027-08-31 (318d)

📋 WHOIS#

⏱️ Lookup Timing#

90ms

79ms

84ms

AAAA

77ms

TXT

194ms

CAA

78ms

HTTPS

83ms

TLSA

94ms

SOA

90ms

MTA-STS

85ms

DNSSEC

182ms

SRV

0ms

Total

594ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 18:36:07	757ms	3 NS 1 A 2 MX	🔓 Insecure
2026-09-30 03:00:36	683ms	3 NS 1 A 2 MX	🔓 Insecure
2026-09-28 04:31:33	9604ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-25 07:21:51	2379ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-22 05:02:43	1324ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-21 14:21:50	1185ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 10:10:36	1094ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-20 21:42:36	1174ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 22:07:40	65535ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-16 21:46:06	1685ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-16 21:31:04 shown	594ms	3 NS 1 A 2 MX	🔓 Insecure