crsystem.dk

📜 Historical scan 2026-08-29 02:01:23 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

crsystem.dk is a .dk domain served by 2 nameservers (alex.ns.cloudflare.com, ingrid.ns.cloudflare.com). It was registered on 19 August 2026 (WHOIS) and first appeared in the .dk zone on 20 August 2026. Its website address 9.205.42.0 is hosted by Microsoft Corporation (AS8075) in Denmark. Mail is handled by crsystem-dk.mail.protection.outlook.com. 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#

2 records 79ms

Nameserver	IP addresses	PTR	ASN / ISP
alex.ns.cloudflare.com	108.162.193.100 172.64.33.100 173.245.59.100 2606:4700:58::adf5:3b64 2803:f800:50::6ca2:c164 2a06:98c1:50::ac40:2164	alex.ns.cloudflare.com alex.ns.cloudflare.com alex.ns.cloudflare.com alex.ns.cloudflare.com alex.ns.cloudflare.com alex.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
ingrid.ns.cloudflare.com	108.162.192.165 172.64.32.165 173.245.58.165 2606:4700:50::adf5:3aa5 2803:f800:50::6ca2:c0a5 2a06:98c1:50::ac40:20a5	ingrid.ns.cloudflare.com ingrid.ns.cloudflare.com ingrid.ns.cloudflare.com ingrid.ns.cloudflare.com ingrid.ns.cloudflare.com ingrid.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 106ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
9.205.42.0	300s	—	AS8075	Microsoft Corporation	9.205.0.0/16	🇩🇰 Denmark	Copenhagen
9.205.42.2	300s	—	AS8075	Microsoft Corporation	9.205.0.0/16	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 77ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	crsystem-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca09:: 2a01:111:f403:ca09::4 2a01:111:f403:ca38::8 52.101.103.137 52.101.68.21 52.101.68.29 52.101.68.32	mail-du2pr03cu00102.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-db3pr0202cu00200.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	104.21.51.141

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 362ms

TXT Record
MS=ms51825961
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (crsystem.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 2026-09-29 19:52:55

www	Address record (no CNAME)
Wildcard	Yes: any name under the zone resolves

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-crsystem-dk._domainkey.crelectricdk.d-v1.dkim.mail.microsoft	RSA · ~2048 bit
selector2	selector2-crsystem-dk._domainkey.crelectricdk.d-v1.dkim.mail.microsoft	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 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#

225ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2413410748
Primary NS (MNAME)	alex.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-08 01:42:37

Field	Value
Registrar	DANDOMAIN A/S
Registered	2026-08-19
Expires	2027-08-18 (304d)

📋 WHOIS#

⏱️ Lookup Timing#

79ms

106ms

77ms

AAAA

95ms

TXT

362ms

CAA

97ms

HTTPS

71ms

TLSA

1648ms

SOA

0ms

MTA-STS

139ms

DNSSEC

225ms

SRV

136ms

Total

2918ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 19:52:55	1085ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-26 22:59:01	905ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-12 10:57:17	1371ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-29 02:01:23 shown	2918ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-26 23:27:15	778ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-22 09:51:50	1266ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-21 09:40:20	3703ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-20 08:50:36	721ms	2 NS 1 A 0 MX	🔓 Insecure