3byg.dk

📜 Historical scan 2026-09-02 18:11:42 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

3byg.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.0 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by 3byg-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. 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 36ms

Nameserver	IP addresses	PTR	ASN / 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 53ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.0	3600s	webcluster1.webpod12-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 50ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	3byg-dk.mail.protection.outlook.com	2a01:111:f403:ca04::b 2a01:111:f403:ca09::b 2a01:111:f403:ca48::10 2a01:111:f403:ca48::a 52.101.103.143 52.101.73.126 52.101.73.4 52.101.73.6	mail-dbbpr03cu00103.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-miypr05cu00100.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am0pr83cu00404.inbound.protection.outlook.com mail-am6pr04cu00306.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 → 40.104.116.56

🔷 AAAA Records (IPv6)#

1 records 46ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10a:1:4e4d:9082:47f9	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 84ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records#

1 records 170ms

TXT Record
v=spf1 ip4:194.182.135.110 include:spf.protection.outlook.com include:_custspf.one.com -all

✉️ SPF#

Policy	Record (3byg.dk)
-all (hard fail)	v=spf1 ip4:194.182.135.110 include:spf.protection.outlook.com include:_custspf.one.com -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 03:54:00

www	46.30.213.0 2a02:2350:5:10a:1:4e4d:9082:47f9 (AS51468) (address records, no CNAME)
www vs bare domain	Same network 3byg.dk: 46.30.213.0 2a02:2350:5:10a:1:4e4d:9082:47f9 (AS51468) www.3byg.dk: 46.30.213.0 2a02:2350:5:10a:1:4e4d:9082:47f9 (AS51468)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

2071ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026081801
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

36ms

53ms

50ms

AAAA

46ms

TXT

170ms

CAA

45ms

HTTPS

44ms

TLSA

803ms

SOA

0ms

MTA-STS

45ms

DNSSEC

2071ms

SRV

84ms

Total

3377ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-27 22:36:09	908ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-17 16:32:14	1473ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-02 18:11:42 shown	3377ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-19 04:29:41	8381ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-18 02:27:43	1200ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-14 19:11:44	5390ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-18 14:28:48	1224ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-15 22:46:50	7558ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-04 15:11:28	1653ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 18:59:00	2344ms	2 NS 1 A 1 MX	⚠️ Bogus
2026-06-20 08:37:24	655ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-19 15:06:07	14469ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 09:46:44	4838ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 12:58:23	1645ms	2 NS 1 A 1 MX	🔒 Secure