kjerstein.dk

📜 Historical scan 2026-08-04 16:39:42 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kjerstein.dk is a .dk domain served by 2 nameservers (ruth.ns.cloudflare.com, tim.ns.cloudflare.com). It was registered on 29 June 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.1.244 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mxa.mailgun.org, mxb.mailgun.org. The zone is DNSSEC-signed and validates, 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 190ms

Nameserver	IP addresses	PTR	ASN / ISP
ruth.ns.cloudflare.com	108.162.192.143 172.64.32.143 173.245.58.143 2606:4700:50::adf5:3a8f 2803:f800:50::6ca2:c08f 2a06:98c1:50::ac40:208f	ruth.ns.cloudflare.com ruth.ns.cloudflare.com ruth.ns.cloudflare.com ruth.ns.cloudflare.com ruth.ns.cloudflare.com ruth.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
tim.ns.cloudflare.com	108.162.193.145 172.64.33.145 173.245.59.145 2606:4700:58::adf5:3b91 2803:f800:50::6ca2:c191 2a06:98c1:50::ac40:2191	tim.ns.cloudflare.com tim.ns.cloudflare.com tim.ns.cloudflare.com tim.ns.cloudflare.com tim.ns.cloudflare.com tim.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 158ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.1.244	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.128.102	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

2 records 194ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mxa.mailgun.org	34.36.182.139	139.182.36.34.bc.googleusercontent.com	AS396982 Google LLC
10	300s	mxb.mailgun.org	34.36.182.139	139.182.36.34.bc.googleusercontent.com	AS396982 Google LLC

🔷 AAAA Records (IPv6)#

2 records 201ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::6815:1f4	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::ac43:8066	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 188ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.1.244,172.67.128.102 ech=AEX+DQBB2QAgACCBGHxzHUR1MjgwtwhZAwIhscmnM5aUV5kPkI+dV/hqZQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:1f4,2606:4700:3036::ac43:8066

📝 TXT Records#

1 records 414ms

TXT Record
v=spf1 include:mailgun.org ~all

✉️ SPF#

Policy	Record (kjerstein.dk)
~all (soft fail)	v=spf1 include:mailgun.org ~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 2026-10-18 20:16:33

www	104.21.1.244 172.67.128.102 2606:4700:3034::6815:1f4 2606:4700:3036::ac43:8066 (AS13335) (address records, no CNAME)
www vs bare domain	Same network kjerstein.dk: 104.21.1.244 172.67.128.102 2606:4700:3034::6815:1f4 2606:4700:3036::ac43:8066 (AS13335) www.kjerstein.dk: 104.21.1.244 172.67.128.102 2606:4700:3034::6815:1f4 2606:4700:3036::ac43:8066 (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 5/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

272ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

0ms

Field	Value
Serial	2411207510
Primary NS (MNAME)	ruth.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-14 14:29:01

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1999-06-29
Expires	2027-06-30 (254d)

📋 WHOIS#

⏱️ Lookup Timing#

190ms

158ms

194ms

AAAA

201ms

TXT

414ms

CAA

179ms

HTTPS

188ms

TLSA

383ms

SOA

0ms

MTA-STS

224ms

DNSSEC

272ms

SRV

218ms

Total

2135ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-18 20:16:33	2047ms	2 NS 2 A 2 MX	🔒 Secure
2026-10-14 14:20:00	606ms	2 NS 2 A 2 MX	🔒 Secure
2026-10-05 17:25:50	2362ms	2 NS 2 A 2 MX	🔒 Secure
2026-09-20 06:22:28	1473ms	2 NS 2 A 2 MX	🔒 Secure
2026-09-01 05:49:50	696ms	2 NS 2 A 2 MX	🔒 Secure
2026-08-27 11:48:18	639ms	2 NS 2 A 2 MX	🔒 Secure
2026-08-04 16:39:42 shown	2135ms	2 NS 2 A 2 MX	🔒 Secure
2026-07-19 21:03:44	1632ms	2 NS 2 A 2 MX	🔒 Secure
2026-07-18 18:03:29	1292ms	2 NS 2 A 2 MX	🔒 Secure
2026-07-10 08:24:39	1230ms	2 NS 2 A 2 MX	🔒 Secure
2026-06-27 22:04:57	2825ms	2 NS 2 A 2 MX	🔒 Secure
2026-06-27 06:44:43	1775ms	2 NS 2 A 2 MX	🔒 Secure
2026-06-25 11:59:49	981ms	2 NS 2 A 2 MX	🔒 Secure
2026-06-24 12:06:23	1156ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-22 08:29:59	1192ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-22 05:07:17	689ms	2 NS 2 A 2 MX	🔒 Secure
2026-06-17 13:29:06	807ms	2 NS 2 A 2 MX	🔒 Secure