c-co.dk

📜 Historical scan 2026-08-27 20:46:29 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

c-co.dk is a .dk domain served by 2 nameservers (ali.ns.cloudflare.com, terin.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.71.171 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by cco-dk0c.mail.protection.outlook.com. 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 47ms

Nameserver	IP addresses	PTR	ASN / ISP
ali.ns.cloudflare.com	108.162.192.59 172.64.32.59 173.245.58.59 2606:4700:50::adf5:3a3b 2803:f800:50::6ca2:c03b 2a06:98c1:50::ac40:203b	ali.ns.cloudflare.com ali.ns.cloudflare.com ali.ns.cloudflare.com ali.ns.cloudflare.com ali.ns.cloudflare.com ali.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
terin.ns.cloudflare.com	108.162.193.236 172.64.33.236 173.245.59.236 2606:4700:58::adf5:3bec 2803:f800:50::6ca2:c1ec 2a06:98c1:50::ac40:21ec	terin.ns.cloudflare.com terin.ns.cloudflare.com terin.ns.cloudflare.com terin.ns.cloudflare.com terin.ns.cloudflare.com terin.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 62ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.71.171	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.171.19	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 55ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	cco-dk0c.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::2 2a01:111:f403:ca09::1 2a01:111:f403:ca09::20 52.101.68.10 52.101.68.32 52.101.68.8 52.101.73.8	mail-dbapr03cu00100.inbound.protection.outlook.com mail-du2pr03cu00102.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am0pr04cu00500.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	172.67.171.19

🔷 AAAA Records (IPv6)#

2 records 53ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:ab13	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3032::6815:47ab	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 56ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.71.171,172.67.171.19 ech=AEX+DQBBfwAgACA47+Qu+1wObnqFo6Z96p4veA7nvt21jpauabCzfKdMLAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:ab13,2606:4700:3032::6815:47ab

🔌 SRV Records#

1 records 87ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 214ms

TXT Record
MS=ms39998074
v=spf1 include:spf.protection.outlook.com ip4:5.134.9.155 ip4:5.134.12.217 ~all

✉️ SPF#

Policy	Record (c-co.dk)
~all (soft fail)	v=spf1 include:spf.protection.outlook.com ip4:5.134.9.155 ip4:5.134.12.217 ~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 2026-10-08 17:35:36

www	104.21.71.171 172.67.171.19 2606:4700:3030::ac43:ab13 2606:4700:3032::6815:47ab (AS13335) (address records, no CNAME)
www vs bare domain	Same network c-co.dk: 104.21.71.171 172.67.171.19 2606:4700:3030::ac43:ab13 2606:4700:3032::6815:47ab (AS13335) www.c-co.dk: 104.21.71.171 172.67.171.19 2606:4700:3030::ac43:ab13 2606:4700:3032::6815:47ab (AS13335)
Wildcard	No

🔎 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#

2071ms

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	2410970474
Primary NS (MNAME)	ali.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

47ms

62ms

55ms

AAAA

53ms

TXT

214ms

CAA

50ms

HTTPS

56ms

TLSA

192ms

SOA

0ms

MTA-STS

82ms

DNSSEC

2071ms

SRV

87ms

Total

2763ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 15:37:44	1584ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-28 23:42:47	1109ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-22 13:57:37	895ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-20 18:04:48	1002ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 20:46:29 shown	2763ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 01:56:37	10067ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-31 18:16:27	1683ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-24 01:55:59	1369ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-25 08:46:04	5692ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-21 01:12:26	1171ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 18:50:10	912ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-16 18:40:55	2692ms	2 NS 2 A 1 MX	🔓 Insecure