cosic.dk

📜 Historical scan 2026-06-20 17:57:28 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cosic.dk is a .dk domain served by 2 nameservers (nena.ns.cloudflare.com, randy.ns.cloudflare.com). It was registered on 26 April 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.86.87 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by in1-smtp.messagingengine.com, in2-smtp.messagingengine.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 40ms

Nameserver	IP addresses	PTR	ASN / ISP
nena.ns.cloudflare.com	108.162.194.161 162.159.38.161 172.64.34.161 2606:4700:50::a29f:26a1 2803:f800:50::6ca2:c2a1 2a06:98c1:50::ac40:22a1	nena.ns.cloudflare.com nena.ns.cloudflare.com nena.ns.cloudflare.com nena.ns.cloudflare.com nena.ns.cloudflare.com nena.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
randy.ns.cloudflare.com	108.162.195.109 162.159.44.109 172.64.35.109 2606:4700:58::a29f:2c6d 2803:f800:50::6ca2:c36d 2a06:98c1:50::ac40:236d	randy.ns.cloudflare.com randy.ns.cloudflare.com randy.ns.cloudflare.com randy.ns.cloudflare.com randy.ns.cloudflare.com randy.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 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.86.87	600s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.217.48	600s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

2 records 39ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	in1-smtp.messagingengine.com	103.168.172.216 103.168.172.217 103.168.172.218 103.168.172.219 103.168.172.220 103.168.172.221 103.168.172.222 103.168.172.223	phl-mx-01.messagingengine.com phl-mx-02.messagingengine.com phl-mx-03.messagingengine.com phl-mx-04.messagingengine.com phl-mx-05.messagingengine.com phl-mx-06.messagingengine.com phl-mx-07.messagingengine.com phl-mx-08.messagingengine.com	AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd
20	600s	in2-smtp.messagingengine.com	202.12.124.216 202.12.124.217 202.12.124.218 202.12.124.219	stl-mx-01.messagingengine.com stl-mx-02.messagingengine.com stl-mx-03.messagingengine.com stl-mx-04.messagingengine.com	AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd

🔷 AAAA Records (IPv6)#

2 records 36ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::6815:5657	600s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:d930	600s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 39ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.86.87,172.67.217.48 ech=AEX+DQBB/gAgACBIVulMEx7OVziL8f6Guob9W5ShrfTsiK0KKx+rZQwZKgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:5657,2606:4700:3035::ac43:d930

🔌 SRV Records#

1 records 61ms

Service	Priority	Weight	Port	Target
_imaps._tcp	0	1	993	imap.fastmail.com

📝 TXT Records#

1 records 168ms

TXT Record
v=spf1 include:spf.messagingengine.com ?all

✉️ SPF#

Policy	Record (cosic.dk)
?all (neutral)	v=spf1 include:spf.messagingengine.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 2026-09-30 21:01:54

www	Address record (no CNAME)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ?all

warn "?all" is neutral: it gives receivers no guidance, much like having no SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

58ms

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

🏷️ SOA#

37ms

Field	Value
Serial	2407412364
Primary NS (MNAME)	nena.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-11 19:38:12

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2012-04-26
Expires	2028-04-30 (561d)

🔗 Same registrant#

1 domain

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
refaktor.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

40ms

38ms

39ms

AAAA

36ms

TXT

168ms

CAA

38ms

HTTPS

39ms

TLSA

376ms

SOA

37ms

MTA-STS

39ms

DNSSEC

58ms

SRV

61ms

Total

970ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 21:01:54	1174ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-25 16:10:53	916ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-24 15:54:31	1631ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-04 10:48:21	1541ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-27 03:37:28	1047ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-19 03:46:27	11063ms	2 NS 2 A 2 MX	🔓 Insecure
2026-07-26 02:49:06	3428ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-20 17:57:28 shown	970ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-16 22:41:13	2770ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-16 22:31:35	935ms	2 NS 2 A 2 MX	🔓 Insecure