kostecki.dk DNS records

🖥️ Nameservers2 records 262ms

Nameserver	IP addresses	PTR	ASN / ISP
gabe.ns.cloudflare.com	108.162.193.114 172.64.33.114 173.245.59.114 2606:4700:58::adf5:3b72 2803:f800:50::6ca2:c172 2a06:98c1:50::ac40:2172	gabe.ns.cloudflare.com gabe.ns.cloudflare.com gabe.ns.cloudflare.com gabe.ns.cloudflare.com gabe.ns.cloudflare.com gabe.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
zelda.ns.cloudflare.com	108.162.192.242 172.64.32.242 173.245.58.242 2606:4700:50::adf5:3af2 2803:f800:50::6ca2:c0f2 2a06:98c1:50::ac40:20f2	zelda.ns.cloudflare.com zelda.ns.cloudflare.com zelda.ns.cloudflare.com zelda.ns.cloudflare.com zelda.ns.cloudflare.com zelda.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 279ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.22.34	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.202.58	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records2 records 220ms

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

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	172.67.202.58
🔶 Autoconfig	104.21.22.34

🔷 AAAA Records (IPv6)2 records 255ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:ca3a	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3032::6815:1622	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 256ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.22.34,172.67.202.58 ech=AEX+DQBB9wAgACDP7kYf708afxpcmGL+xdHXt0+1MJWgPsOEJUKRf4RSdAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:ca3a,2606:4700:3032::6815:1622

📝 TXT Records1 records 1182ms

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

✉️ SPF

Policy	Record (kostecki.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

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.kostecki.dk	GG1xyf2U4xB3WV2c2D8ohq-3smsv5kuSpJ_vRSACAfk
TXT	_acme-challenge.kostecki.dk	uOqiXOSmY8-xJycOFdUoWq1iHe-tgWbZ1giZ8ENZm3I

🔗 TLSA / DANE

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

🔐 DNSSEC771ms

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	2412362162
Primary NS (MNAME)	gabe.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

262ms

A

279ms

MX

220ms

AAAA

255ms

TXT

1182ms

CAA

244ms

HTTPS

256ms

TLSA

542ms

SOA

0ms

MTA-STS

456ms

DNSSEC

771ms

SRV

325ms

Total

8854ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 03:56:01	2050ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-29 03:03:59	3040ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-28 00:13:30	648ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-26 21:52:27	4757ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-25 19:47:29	1123ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-25 08:35:34	2241ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-24 02:22:17	1931ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-23 01:32:04	1801ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-22 01:10:55	10016ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-21 00:38:06	11862ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-19 22:13:56	9932ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-18 21:57:07	6160ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-16 23:40:06	8854ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-15 20:19:05	2372ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-14 09:34:16	1451ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-12 21:49:27	1766ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-11 14:30:19	2088ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-09 19:09:43	1819ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-03 01:42:35	2212ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-07-22 20:11:10	1625ms	2 NS 2 A 2 MX	❓ Unknown	View
2026-07-03 20:37:34	2171ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-07-02 07:03:47	1335ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-06-18 01:53:34	895ms	2 NS 2 A 2 MX	🔓 Insecure	View