crewstack.dk

📜 Historical scan 2026-06-20 00:09:13 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

crewstack.dk is a .dk domain served by 2 nameservers (dina.ns.cloudflare.com, paul.ns.cloudflare.com). It was registered on 17 June 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.52.186 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, has no 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 69ms

Nameserver	IP addresses	PTR	ASN / ISP
dina.ns.cloudflare.com	108.162.192.107 172.64.32.107 173.245.58.107 2606:4700:50::adf5:3a6b 2803:f800:50::6ca2:c06b 2a06:98c1:50::ac40:206b	dina.ns.cloudflare.com dina.ns.cloudflare.com dina.ns.cloudflare.com dina.ns.cloudflare.com dina.ns.cloudflare.com dina.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
paul.ns.cloudflare.com	108.162.193.135 172.64.33.135 173.245.59.135 2606:4700:58::adf5:3b87 2803:f800:50::6ca2:c187 2a06:98c1:50::ac40:2187	paul.ns.cloudflare.com paul.ns.cloudflare.com paul.ns.cloudflare.com paul.ns.cloudflare.com paul.ns.cloudflare.com paul.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 69ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.52.186	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.202.218	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 61ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	2a00:1450:4010:c09::1a 2a00:1450:4010:c09::1a 64.233.161.26	lk-in-f26.1e100.net lk-in-x1a.1e100.net lh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1b	so-in-f26.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1a	tp-in-f27.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1a	tp-in-f27.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	172.67.202.218
🔶 Autoconfig	104.21.52.186

🔷 AAAA Records (IPv6)#

2 records 60ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:34ba	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::ac43:cada	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 61ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.52.186,172.67.202.218 ech=AEX+DQBBmQAgACAW2Zml2I0DYSJ6ZUQjSHgtTQ4aJ7FXZdhBDW7ShydAEAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:34ba,2606:4700:3033::ac43:cada

📝 TXT Records#

2 records 277ms

TXT Record
google-site-verification=kf9BixdIMH1lvc8fn8GR55V9OwWCvOl59nWOsEZMXhg
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (crewstack.dk)
~all (soft fail)	v=spf1 include:_spf.google.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#

latest probe, not this scan · checked 2026-10-09 07:44:37

www	104.21.52.186 172.67.202.218 2606:4700:3033::6815:34ba 2606:4700:3033::ac43:cada (AS13335) (address records, no CNAME)
www vs bare domain	Same network crewstack.dk: 104.21.52.186 172.67.202.218 2606:4700:3033::6815:34ba 2606:4700:3033::ac43:cada (AS13335) www.crewstack.dk: 104.21.52.186 172.67.202.218 2606:4700:3033::6815:34ba 2606:4700:3033::ac43:cada (AS13335)
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#

161ms

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

🏷️ SOA#

61ms

Field	Value
Serial	2406269271
Primary NS (MNAME)	dina.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-09 08:00:24

Field	Value
Registrar	Simply.com A/S
Registered	2025-06-17
Expires	2027-06-16 (238d)

📋 WHOIS#

⏱️ Lookup Timing#

69ms

61ms

AAAA

60ms

TXT

277ms

CAA

69ms

HTTPS

61ms

TLSA

111ms

SOA

61ms

MTA-STS

50ms

DNSSEC

161ms

SRV

227ms

Total

934ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 07:44:37	3129ms	2 NS 2 A 5 MX	🔓 Insecure
2026-10-08 07:42:32	949ms	2 NS 2 A 5 MX	🔓 Insecure
2026-10-03 16:15:02	1761ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-30 16:04:06	1094ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-29 15:57:42	569ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-29 15:23:38	2758ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-28 05:36:00	2923ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-09 18:23:41	2146ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-06 11:23:32	1533ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-27 09:01:01	1131ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-20 06:54:38	3784ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-20 00:09:13 shown	934ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-16 22:56:14	660ms	2 NS 2 A 5 MX	🔓 Insecure