ns-byg.dk

📜 Historical scan 2026-06-17 19:15:04 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ns-byg.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 8 June 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.42.206 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by nsbyg-dk0e.mail.protection.outlook.com. 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 46ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 69ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.42.206	—	linux201.scannet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 67ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	nsbyg-dk0e.mail.protection.outlook.com	2a01:111:f403:ca04::5 2a01:111:f403:ca04::6 2a01:111:f403:ca04::7 2a01:111:f403:ca09::7 52.101.68.21 52.101.68.3 52.101.73.19 52.101.73.30	mail-db3pr0202cu00205.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-db4pr02cu00307.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-am7pr05cu00306.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 52.97.176.104
🔶 Autoconfig	185.21.41.178

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 220ms

TXT Record
MS=ms69350707
v=spf1 a ip4:188.165.170.41 mx a ip4:93.90.117.1/24 ip4:93.90.115.1/24 ip4:217.182.33.13 ip4:145.239.139.92 ip4:95.154.31.174 include:spf.protection.outlook.com include:spf.zitcom.dk ~all

✉️ SPF#

Policy	Record (ns-byg.dk)
~all (soft fail)	v=spf1 a ip4:188.165.170.41 mx a ip4:93.90.117.1/24 ip4:93.90.115.1/24 ip4:217.182.33.13 ip4:145.239.139.92 ip4:95.154.31.174 include:spf.protection.outlook.com include:spf.zitcom.dk ~all

📨 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 2026-10-10 18:56:48

www	185.21.42.206 (AS48854) (address records, no CNAME)
www vs bare domain	Same network ns-byg.dk: 185.21.42.206 (AS48854) www.ns-byg.dk: 185.21.42.206 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 7/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

120ms

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

🏷️ SOA#

64ms

Field	Value
Serial	2026021102
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-05 13:39:56

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2007-06-08
Expires	2027-06-30 (251d)

📋 WHOIS#

⏱️ Lookup Timing#

46ms

69ms

67ms

AAAA

65ms

TXT

220ms

CAA

41ms

HTTPS

67ms

TLSA

192ms

SOA

64ms

MTA-STS

66ms

DNSSEC

120ms

SRV

86ms

Total

907ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-26 12:01:37	815ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-28 09:55:47	905ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-27 00:57:41	1114ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 19:15:04 shown	907ms	2 NS 1 A 1 MX	🔒 Secure