sailer.dk

📜 Historical scan 2026-06-27 03:16:50 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sailer.dk is a .dk domain served by 4 nameservers (ns1.dotserv.com, ns1.dotserv.net, ns2.dotserv.com and 1 more). It was registered on 24 April 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 178.20.216.13 is hosted by Atea A/S (AS21060) in Denmark. Mail is handled by ispc3.dotserv.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#

4 records 225ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dotserv.com	178.20.218.61 2a01:7cc0:101:ffff::51	ns1.dotserv.com ns1.dotserv.com	AS21060 Atea A/S AS21060 Atea A/S
ns1.dotserv.net	178.20.217.29 2a01:7cc0:101:ffff::52	ns1.dotserv.net ns2.dotserv.com	AS21060 Atea A/S AS21060 Atea A/S
ns2.dotserv.com	193.180.214.21	—	AS44803 Webdock.io ApS
ns2.dotserv.net	162.19.249.51 2001:41d0:701:1100::c89e	ns2.dotserv.net ns2.dotserv.net	AS16276 OVH SAS AS16276 OVH SAS

🌍 A Records#

1 records 209ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
178.20.216.13	3600s	ispc3.dotserv.com	AS21060	Atea A/S	178.20.216.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 212ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	ispc3.dotserv.com	178.20.216.13	ispc3.dotserv.com	AS21060 Atea A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	mail.sailer.dk → 178.20.216.13

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 484ms

TXT Record
v=spf1 include:_spf.dotserv.com -all

✉️ SPF#

Policy	Record (sailer.dk)
-all (hard fail)	v=spf1 include:_spf.dotserv.com -all

📨 DMARC#

Policy	Record (_dmarc.sailer.dk)
p=reject	v=DMARC1; p=reject;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

2 records 217ms

Flags	Tag	Value
0	issue	comodoca.com
0	issue	letsencrypt.org

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-09 19:33:30

www	178.20.216.13 (AS21060) (address records, no CNAME)
www vs bare domain	Same network sailer.dk: 178.20.216.13 (AS21060) www.sailer.dk: 178.20.216.13 (AS21060)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

305ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	unsigned answer

🏷️ SOA#

197ms

Field	Value
Serial	1284628504
Primary NS (MNAME)	ns1.dotserv.com
Responsible (RNAME)	hostmaster@dotserv.com
Refresh	14400s
Retry	7200s
Expire	1209600s
Minimum (neg-cache TTL)	900s

📋 Registration#

WHOIS fetched 2026-10-10 18:23:24

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2002-04-24
Expires	2027-06-30 (255d)

📋 WHOIS#

⏱️ Lookup Timing#

225ms

209ms

212ms

AAAA

187ms

TXT

484ms

CAA

217ms

HTTPS

219ms

TLSA

119ms

SOA

197ms

MTA-STS

241ms

DNSSEC

305ms

SRV

248ms

Total

1356ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-05 23:29:49	9563ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-26 21:17:20	9694ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-28 02:05:30	810ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-27 03:16:50 shown	1356ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-23 23:28:31	759ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-17 23:39:32	817ms	4 NS 1 A 1 MX	🔓 Insecure