cosic.dk DNS records

🖥️ Nameservers2 records 50ms

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 Records2 records 91ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.86.87	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.217.48	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records2 records 50ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	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	300s	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 62ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:5657	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:d930	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 60ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.86.87,172.67.217.48 ech=AEX+DQBBOAAgACACu6z+tYlNEn+wKDk/uzhGc5lAyIsqWJhR583j7e+BfgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:5657,2606:4700:3034::ac43:d930

🔌 SRV Records1 records 185ms

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

📝 TXT Records1 records 292ms

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

🔗 TLSA / DANE

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

🔐 DNSSEC191ms

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

🏷️ SOA0ms

Field	Value
Serial	2412533788
Primary NS (MNAME)	nena.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

50ms

A

91ms

MX

50ms

AAAA

62ms

TXT

292ms

CAA

61ms

HTTPS

60ms

TLSA

108ms

SOA

0ms

MTA-STS

163ms

DNSSEC

191ms

SRV

185ms

Total

1047ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 03:37:28	1047ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-19 03:46:27	11063ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-07-26 02:49:06	3428ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-06-20 17:57:28	970ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-06-16 22:41:13	2770ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-06-16 22:31:35	935ms	2 NS 2 A 2 MX	🔓 Insecure	View