c-co.dk

📜 Historical scan 2026-09-22 13:57:37 · ← 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 registered on 1 March 2000 (WHOIS) and 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 29ms

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 36ms

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 34ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	cco-dk0c.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca09::20 2a01:111:f403:ca48::8 2a01:111:f403:ca48::c 52.101.181.153 52.101.68.12 52.101.91.162 52.101.91.21	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-matpr04cu00302.inbound.protection.outlook.com mail-matpr05cu00105.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	104.21.71.171

🔷 AAAA Records (IPv6)#

2 records 37ms

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 37ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.71.171,172.67.171.19 ech=AEX+DQBB7gAgACDC0rnsHRoKLeDt0kiIEE4FV3cRf7rlMt+KUqAgnqX9SgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:ab13,2606:4700:3032::6815:47ab

🔌 SRV Records#

1 records 58ms

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

📝 TXT Records#

2 records 171ms

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#

118ms

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	2415562732
Primary NS (MNAME)	ali.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-22 09:36:56

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2000-03-01
Expires	2027-07-31 (282d)

🔗 Same registrant#

15 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).

Domain	Registrar
baredns.dk	Realtime Register B.V.
bookey.dk	Realtime Register B.V.
busii.dk	Realtime Register B.V.
diseno.dk	Realtime Register B.V.
energifond.dk	Punktum dk A/S (direct)
ghdottir.dk	Punktum dk A/S (direct)
lateoffer.dk	Realtime Register B.V.
lenn.dk	Realtime Register B.V.
malervejen.dk	Punktum dk A/S (direct)
storartet.dk	Realtime Register B.V.
teom.dk	Punktum dk A/S (direct)
webcompany.dk	Punktum dk A/S (direct)
wp7.dk	Realtime Register B.V.
wpguru.dk	Punktum dk A/S (direct)
wsc.dk	Realtime Register B.V.

📋 WHOIS#

⏱️ Lookup Timing#

29ms

36ms

34ms

AAAA

37ms

TXT

171ms

CAA

36ms

HTTPS

37ms

TLSA

183ms

SOA

0ms

MTA-STS

53ms

DNSSEC

118ms

SRV

58ms

Total

895ms

🕐 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 shown	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	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