crosslab.dk

📜 Historical scan 2026-06-16 23:00:32 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

crosslab.dk is a .dk domain served by 2 nameservers (dara.ns.cloudflare.com, piotr.ns.cloudflare.com). It was registered on 31 August 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.8.147 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.simply.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 28ms

Nameserver	IP addresses	PTR	ASN / ISP
dara.ns.cloudflare.com	—	—	—
piotr.ns.cloudflare.com	—	—	—

🌍 A Records#

2 records 27ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.8.147	—	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.188.139	—	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 29ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mx.simply.com	94.231.106.20	mx.simply.com	AS48854 team.blue Denmark A/S

🔷 AAAA Records (IPv6)#

2 records 30ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::ac43:bc8b	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:893	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 29ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.8.147,172.67.188.139 ech=AEX+DQBBAgAgACDurI0kjS+pgI4tREFXZNZReDzCEtZ7GTrS4X0Uec/8AwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:bc8b,2606:4700:3035::6815:893

📝 TXT Records#

1 records 126ms

TXT Record
v=spf1 include:mail.reepay.com include:spf.simply.com ~all

✉️ SPF#

Policy	Record (crosslab.dk)
~all (soft fail)	v=spf1 include:mail.reepay.com include:spf.simply.com ~all

📨 DMARC#

Policy	Record (_dmarc.crosslab.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:mathias@mejborn.dk; ruf=mailto:mathias@mejborn.dk; fo=1

📬 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 2026-10-14 13:10:59

www	104.21.8.147 172.67.188.139 2606:4700:3030::ac43:bc8b 2606:4700:3033::6815:893 (AS13335) (address records, no CNAME)
www vs bare domain	Same network crosslab.dk: 104.21.8.147 172.67.188.139 2606:4700:3030::ac43:bc8b 2606:4700:3033::6815:893 (AS13335) www.crosslab.dk: 104.21.8.147 172.67.188.139 2606:4700:3030::ac43:bc8b 2606:4700:3033::6815:893 (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 8/10 · policy: ~all

warn 8 of the 10 allowed DNS lookups used: one more include can break SPF

🔗 TLSA / DANE#

2 records 2071ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	A9D603AF4D7ED6B9246B4B68500CD6F2…
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	97A3BA009F39C761BFFB6574340E8138…

🔐 DNSSEC#

106ms

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

🏷️ SOA#

27ms

Field	Value
Serial	2405570727
Primary NS (MNAME)	dara.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-14 13:30:50

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2017-08-31
Expires	2027-08-31 (317d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

28ms

27ms

29ms

AAAA

30ms

TXT

126ms

CAA

27ms

HTTPS

29ms

TLSA

2071ms

SOA

27ms

MTA-STS

31ms

DNSSEC

106ms

SRV

0ms

Total

2525ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-14 13:10:59	743ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-25 12:48:00	1214ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-24 12:36:32	601ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-01 01:00:18	9579ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-29 01:10:42	6771ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-17 06:12:09	4233ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-28 13:47:39	9851ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-02 14:12:55	1445ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-20 23:32:31	1439ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-20 23:05:57	1155ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 00:56:12	65535ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-16 23:23:04	1625ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-16 23:07:35	445ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-16 23:00:32 shown	2525ms	2 NS 2 A 1 MX	🔓 Insecure