kostecki.dk

📜 Historical scan 2026-08-26 21:52:27 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kostecki.dk is a .dk domain served by 2 nameservers (gabe.ns.cloudflare.com, zelda.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.22.34 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 30ms

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 Records#

2 records 35ms

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 Records#

2 records 26ms

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	172.67.202.58

🔷 AAAA Records (IPv6)#

2 records 32ms

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 Records#

1 records 23ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.22.34,172.67.202.58 ech=AEX+DQBB5AAgACABapd4L/jVNdxaf0gluT2G7/56pQYsISi2KEnoFpT2AgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:ca3a,2606:4700:3032::6815:1622

📝 TXT Records#

1 records 165ms

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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-13 05:27:36

www	104.21.22.34 172.67.202.58 2606:4700:3030::ac43:ca3a 2606:4700:3032::6815:1622 (AS13335) (address records, no CNAME)
www vs bare domain	Same network kostecki.dk: 104.21.22.34 172.67.202.58 2606:4700:3030::ac43:ca3a 2606:4700:3032::6815:1622 (AS13335) www.kostecki.dk: 104.21.22.34 172.67.202.58 2606:4700:3030::ac43:ca3a 2606:4700:3032::6815:1622 (AS13335)
Wildcard	Yes: any name under the zone resolves

🔎 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

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.kostecki.dk	GG1xyf2U4xB3WV2c2D8ohq-3smsv5kuSpJ_vRSACAfk
TXT	_acme-challenge.kostecki.dk	OigvlnHW-E6iZ9E7abFAKNZvZjaHjRu7cYkjFW_szf8
TXT	_acme-challenge.kostecki.dk	uOqiXOSmY8-xJycOFdUoWq1iHe-tgWbZ1giZ8ENZm3I
TXT	_acme-challenge.kostecki.dk	xa612zFlVcMJP2jxhJivGG1ZHOHiupb1jMFueoFTXW4

🔗 TLSA / DANE#

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

🔐 DNSSEC#

100ms

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	2413256974
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 yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

30ms

35ms

26ms

AAAA

32ms

TXT

165ms

CAA

32ms

HTTPS

23ms

TLSA

136ms

SOA

0ms

MTA-STS

54ms

DNSSEC

100ms

SRV

57ms

Total

4757ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 05:27:36	669ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-29 23:38:10	820ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-26 23:29:55	2954ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-23 22:37:45	855ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-22 14:12:26	1998ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-13 02:00:28	2518ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-06 04:18:57	1813ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-30 03:56:01	2050ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-29 03:03:59	3040ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-28 00:13:30	648ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-26 21:52:27 shown	4757ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-25 19:47:29	1123ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-25 08:35:34	2241ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-24 02:22:17	1931ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-23 01:32:04	1801ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-22 01:10:55	10016ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-21 00:38:06	11862ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-19 22:13:56	9932ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-18 21:57:07	6160ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-16 23:40:06	8854ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-15 20:19:05	2372ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-14 09:34:16	1451ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-12 21:49:27	1766ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-11 14:30:19	2088ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-09 19:09:43	1819ms	2 NS 2 A 2 MX	🔓 Insecure