zsb.dk

📜 Historical scan 2026-09-24 06:08:55 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

zsb.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 16 July 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 88.212.124.243 is hosted by GlobalConnect A/S (AS31027) in Denmark. Mail is handled by .. The zone is DNSSEC-signed and validates, 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 44ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
88.212.124.243	3600s	—	AS31027	GlobalConnect A/S	88.212.64.0/18	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 43ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	. Null MX — domain accepts no email (RFC 7505)

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 116ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (zsb.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.zsb.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#

3 records 31ms

Flags	Tag	Value
0	iodef	mailto:admin@zss.dk
0	issue	digicert.com
0	issue	letsencrypt.org

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-13 10:04:17

www	88.212.124.243 (AS31027) (address records, no CNAME)
www vs bare domain	Same network zsb.dk: 88.212.124.243 (AS31027) www.zsb.dk: 88.212.124.243 (AS31027)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
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: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

119ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026092301
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-02 14:57:29

Field	Value
Registrar	Simply.com A/S
Registered	2021-07-16
Expires	2027-07-31 (283d)

📋 WHOIS#

⏱️ Lookup Timing#

44ms

42ms

43ms

AAAA

40ms

TXT

116ms

CAA

31ms

HTTPS

33ms

TLSA

2296ms

SOA

0ms

MTA-STS

54ms

DNSSEC

119ms

SRV

43ms

Total

2768ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 10:04:17	362ms	4 NS 1 A 1 MX	🔒 Secure
2026-10-02 14:40:14	1859ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-24 13:17:57	690ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-24 06:08:55 shown	2768ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-26 03:09:07	649ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-23 21:19:05	1165ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 13:22:43	1477ms	4 NS 1 A 0 MX	🔒 Secure