sluyterman.dk

📜 Historical scan 2026-06-19 22:01:29 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sluyterman.dk is a .dk domain served by 2 nameservers (ns1.kieferdns.dk, ns2.kieferdns.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail2.kiefer.dk. 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 337ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.kieferdns.dk	51.68.230.74	74.ip-51-68-230.eu	AS16276 OVH SAS
ns2.kieferdns.dk	192.243.101.225	—	AS36454 WHG Hosting Services Ltd

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 215ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	10800s	mail2.kiefer.dk	2001:41d0:305:2100::64c8 51.68.230.81	— mail2.kiefer.dk	AS16276 OVH SAS AS16276 OVH SAS

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 723ms

TXT Record
MS=ms25406541
v=spf1 mx a ip4:37.187.60.179 ip4:51.91.249.33 a:mail1.kiefer.dk a:vps-1a1975a3.vps.ovh.net a:mail2.kiefer.dk a:exchange.kiefer.dk -all

✉️ SPF#

Policy	Record (sluyterman.dk)
-all (hard fail)	v=spf1 mx a ip4:37.187.60.179 ip4:51.91.249.33 a:mail1.kiefer.dk a:vps-1a1975a3.vps.ovh.net a:mail2.kiefer.dk a:exchange.kiefer.dk -all

📨 DMARC#

Policy	Record (_dmarc.sluyterman.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:abuse@sluyterman.dk; adkim=s; aspf=s;

📬 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 2026-10-07 18:43:02

www	37.187.66.122 (AS16276) (address records, no CNAME)
www vs bare domain	Only www resolves sluyterman.dk: no address www.sluyterman.dk: 37.187.66.122 (AS16276) (all like this)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 6/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

228ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

204ms

Field	Value
Serial	2021070502
Primary NS (MNAME)	ns1.kieferdns.dk
Responsible (RNAME)	hostmaster@kieferdns.dk
Refresh	2400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	10800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

337ms

155ms

215ms

AAAA

201ms

TXT

723ms

CAA

252ms

HTTPS

55ms

TLSA

366ms

SOA

204ms

MTA-STS

230ms

DNSSEC

228ms

SRV

499ms

Total

1803ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-24 12:38:37	1274ms	2 NS 0 A 1 MX	🔓 Insecure
2026-06-26 18:38:02	1333ms	2 NS 0 A 1 MX	🔓 Insecure
2026-06-26 13:33:48	1882ms	2 NS 0 A 1 MX	🔓 Insecure
2026-06-19 22:01:29 shown	1803ms	2 NS 0 A 1 MX	🔓 Insecure
2026-06-17 11:43:56	1080ms	2 NS 0 A 1 MX	🔓 Insecure