crtool.dk

📜 Historical scan 2026-08-27 00:33:20 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

crtool.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 28 April 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.131 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by crtool-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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 53ms

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 47ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.131	600s	linux23.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 54ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	crtool-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::b 2a01:111:f403:ca09::20 2a01:111:f403:ca09::d 52.101.68.27 52.101.68.36 52.101.73.22 52.101.73.6	mail-db5pr02cu00100.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-am6pr04cu00306.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 → 40.104.116.56
🔶 Autoconfig	185.21.41.131

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 200ms

TXT Record
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (crtool.dk)
-all (hard fail)	v=spf1 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#

latest probe, not this scan · checked 2026-10-11 03:20:56

www	185.21.41.131 (AS48854) (address records, no CNAME)
www vs bare domain	Same network crtool.dk: 185.21.41.131 (AS48854) www.crtool.dk: 185.21.41.131 (AS48854)
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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

76ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026081202
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 2026-10-06 22:04:45

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2007-04-28
Expires	2027-04-30 (195d)

📋 WHOIS#

⏱️ Lookup Timing#

53ms

47ms

54ms

AAAA

47ms

TXT

200ms

CAA

56ms

HTTPS

60ms

TLSA

179ms

SOA

0ms

MTA-STS

67ms

DNSSEC

76ms

SRV

74ms

Total

806ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-11 03:20:56	1195ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-06 21:58:33	2410ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-25 19:48:33	1135ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-16 13:59:46	766ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-06 09:11:15	1067ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-27 00:33:20 shown	806ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-25 23:47:02	884ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-15 22:03:08	5383ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-12 03:51:24	1900ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-09 17:17:42	1312ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-08 17:13:28	2153ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-26 00:32:47	3039ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 23:56:24	1174ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 23:18:39	2730ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 23:10:58	1031ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 23:00:05	637ms	2 NS 1 A 1 MX	🔒 Secure