nsero.dk

Records from scan: 2026-10-09 09:33:25 · 1435ms total · last checked 2026-10-16 15:38 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

nsero.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 2 July 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 178.20.216.41 is hosted by Atea A/S (AS21060) in Denmark. Mail is handled by ispc11.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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

4 records 70ms

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 ns1.dotserv.net	AS21060 Atea A/S AS21060 Atea A/S
ns2.dotserv.com	193.180.214.21	ns2.dotserv.com	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 59ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
178.20.216.41	3600s	ispc11.dotserv.com	AS21060	Atea A/S	178.20.216.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 56ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	ispc11.dotserv.com	178.20.216.41	ispc11.dotserv.com	AS21060 Atea A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	mail.nsero.dk → 178.20.216.41
🔶 Autoconfig	178.20.216.41

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 232ms

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

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.nsero.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 49ms

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

🧩 Web & zone#

checked 2026-10-09 09:33:25

www	178.20.216.41 (AS21060) (address records, no CNAME)
www vs bare domain	Same network nsero.dk: 178.20.216.41 (AS21060) www.nsero.dk: 178.20.216.41 (AS21060)
Wildcard	Yes: any name under the zone resolves
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#

141ms

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

🏷️ SOA#

56ms

Field	Value
Serial	1288690797
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 21:26:58

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2002-07-02
Expires	2027-09-30 (348d)

📋 WHOIS#

⏱️ Lookup Timing#

70ms

59ms

56ms

AAAA

61ms

TXT

232ms

CAA

49ms

HTTPS

71ms

TLSA

184ms

SOA

56ms

MTA-STS

97ms

DNSSEC

141ms

SRV

108ms

Total

1435ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 09:33:25 shown	1435ms	4 NS 1 A 1 MX	🔓 Insecure
2026-09-26 00:38:04	9572ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-27 12:42:30	907ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-25 14:15:24	868ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-20 01:03:53	708ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-17 12:03:51	665ms	4 NS 1 A 1 MX	🔓 Insecure