n2b.dk

📜 Historical scan 2026-09-28 02:19:20  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

n2b.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 20 October 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 89.23.236.21 is hosted by Fiberby ApS (AS42541) in Denmark. Mail is handled by mx09.posthuset.nu, mx11.posthuset.nu. The zone is DNSSEC-signed and validates, has no 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   30ms
NameserverIP addressesPTRASN / ISP
ns01.one.com 195.206.121.10
2001:67c:28cc::10		 ns01.one.com
ns01.one.com		 AS197495 One.com A/S
AS197495 One.com A/S
ns02.one.com 185.10.11.10
2001:67c:3c0::10		 ns02.one.com
ns02.one.com		 AS51468 One.com A/S
AS51468 One.com A/S

🌍 A Records#

1 records   33ms
IPTTLPTRASNISP / OrgCIDRCountryCity
89.23.236.21 600s 89-23-236-21.ip4.fiberby.net AS42541 Fiberby ApS 89.23.224.0/19 🇩🇰 Denmark Copenhagen

📧 MX Records#

2 records   32ms
PriorityTTLMail ServerIP addressesPTRASN
9 43200s mx09.posthuset.nu 185.21.40.130 vm1220.enterprisecloud.nu AS48854 team.blue Denmark A/S
11 43200s mx11.posthuset.nu 185.21.40.130 vm1220.enterprisecloud.nu AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscovern2b.dk → 89.23.236.21
🔶 Autoconfign2b.dk → 89.23.236.21

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records   161ms
TXT Record
Posthuset

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-08 01:54:52
www CNAMEn2b.dk (all on n2b.dk)
www vs bare domainSame network
n2b.dk: 89.23.236.21 (AS42541)
www.n2b.dk: 89.23.236.21 (AS42541)
WildcardYes: any name under the zone resolves
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

🔏 ACME Challenge#

TypeNameValue
CNAME _acme-challenge.n2b.dk n2b.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

67ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

0ms
FieldValue
Serial2026092301
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s

📋 Registration#

WHOIS fetched 2026-10-09 04:11:57
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2009-10-20
Expires2026-10-31 (14d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
30ms
A
33ms
MX
32ms
AAAA
31ms
TXT
161ms
CAA
44ms
HTTPS
21ms
TLSA
988ms
SOA
0ms
MTA-STS
40ms
DNSSEC
67ms
SRV
58ms
Total
1527ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-02 22:37:11 4544ms 2 NS 1 A 2 MX 🔒 Secure
2026-09-29 22:17:23 610ms 2 NS 1 A 2 MX 🔒 Secure
2026-09-28 02:19:20 shown 1527ms 2 NS 1 A 2 MX 🔒 Secure
2026-09-24 01:56:50 755ms 2 NS 1 A 2 MX 🔒 Secure
2026-08-27 05:16:55 644ms 2 NS 1 A 2 MX 🔒 Secure
2026-06-27 07:20:01 760ms 2 NS 1 A 2 MX 🔒 Secure
2026-06-17 20:01:22 919ms 2 NS 1 A 2 MX 🔒 Secure
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