klarstrup.dk

📜 Historical scan 2026-09-09 04:55:49 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

klarstrup.dk is a .dk domain served by 2 nameservers (ns1.vercel-dns.com, ns2.vercel-dns.com). It was registered on 21 March 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 64.29.17.1 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by mx1.improvmx.com, mx2.improvmx.com. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. 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 50ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.vercel-dns.com	198.51.44.13 2620:4d:4000:6259:7:13:0:1	dns1.p13.nsone.net dns1.p13.nsone.net	AS62597 NSONE Inc AS62597 NSONE Inc
ns2.vercel-dns.com	198.51.45.13 2a00:edc0:6259:7:13::2	dns2.p13.nsone.net dns2.p13.nsone.net	AS62597 NSONE Inc AS62597 NSONE Inc

🌍 A Records#

2 records 52ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
64.29.17.1	1800s	—	AS16509	Amazon.com, Inc.	64.29.17.0/24	🇺🇸 United States	—
64.29.17.65	1800s	—	AS16509	Amazon.com, Inc.	64.29.17.0/24	🇺🇸 United States	—

📧 MX Records#

2 records 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	60s	mx1.improvmx.com	13.37.195.136 15.236.236.160 2a05:d012:412:e201:88aa:e7b9:7a43:12d7 2a05:d012:412:e202:f36:2c1f:1a49:d38a 2a05:d012:412:e203:373a:f51a:4a85:1d25 35.181.18.45	ec2-13-37-195-136.eu-west-3.compute.amazonaws.com ec2-15-236-236-160.eu-west-3.compute.amazonaws.com — — — ec2-35-181-18-45.eu-west-3.compute.amazonaws.com	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
20	60s	mx2.improvmx.com	13.36.107.63 13.36.222.39 15.236.61.92 2a05:d012:412:e201:1f6e:f6e4:8fd7:4678 2a05:d012:412:e202:e81e:cc44:3b53:8a3d 2a05:d012:412:e203:7e33:3d9c:28d7:ee20	ec2-13-36-107-63.eu-west-3.compute.amazonaws.com ec2-13-36-222-39.eu-west-3.compute.amazonaws.com ec2-15-236-61-92.eu-west-3.compute.amazonaws.com — — —	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	64.29.17.1
🔶 Autoconfig	216.198.79.65

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 359ms

TXT Record
v=spf1 include:spf.improvmx.com ~all

✉️ SPF#

Policy	Record (klarstrup.dk)
~all (soft fail)	v=spf1 include:spf.improvmx.com ~all

📨 DMARC#

Policy	Record (_dmarc.klarstrup.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

3 records 54ms

Flags	Tag	Value
0	issue	letsencrypt.org
0	issue	pki.goog
0	issue	sectigo.com

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-10 06:09:33

www	216.198.79.1 64.29.17.65 (AS16509) (address records, no CNAME)
www vs bare domain	Same network klarstrup.dk: 216.198.79.1 64.29.17.65 (AS16509) www.klarstrup.dk: 216.198.79.1 64.29.17.65 (AS16509)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

106ms

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	1683480671
Primary NS (MNAME)	ns1.vercel-dns.com
Responsible (RNAME)	hostmaster@nsone.net
Refresh	43200s
Retry	7200s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-18 13:46:55

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2015-03-21
Expires	2027-03-31 (159d)

🔗 Same registrant#

3 domains

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
derp.dk	Punktum dk A/S (direct)
exelerate.dk	Punktum dk A/S (direct)
uptrans.dk	DANDOMAIN A/S

📋 WHOIS#

⏱️ Lookup Timing#

50ms

52ms

47ms

AAAA

56ms

TXT

359ms

CAA

54ms

HTTPS

53ms

TLSA

143ms

SOA

0ms

MTA-STS

86ms

DNSSEC

106ms

SRV

101ms

Total

1049ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 04:00:17	1142ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-15 03:15:01	1091ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-09 04:55:49 shown	1049ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-17 11:57:01	1246ms	2 NS 2 A 2 MX	🔓 Insecure