b-byg.dk DNS records

🖥️ Nameservers5 records 185ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.gigahost.dk	46.183.139.31	ns1.gigahost.dk	AS47292 Sentia Denmark A/S
ns2.gigahost.dk	46.183.139.222	web22.gigahost.dk	AS47292 Sentia Denmark A/S
ns3.gigahost.dk	71.19.249.71	ns3.gigahost.dk	AS11831 eSecureData
ns4.gigahost.dk	51.79.215.130	ns4.gigahost.dk	AS16276 OVH SAS
ns5.gigahost.dk	77.74.192.83	ns5.gigahost.dk	AS42831 UK Dedicated Servers Limited

🌍 A Records1 records 186ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.183.138.100	3600s	—	AS47292	Sentia Denmark A/S	46.183.138.0/23	🇩🇰 Denmark	—

📧 MX Records1 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	bbyg-dk0c.mail.protection.outlook.com	2a01:111:f403:ca04::6 2a01:111:f403:ca04::e 2a01:111:f403:ca09::24 2a01:111:f403:ca21::c 52.101.103.143 52.101.103.36 52.101.103.39 52.101.68.5	mail-db4pr02cu00406.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-matpr04cu00204.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-miypr05cu00104.inbound.protection.outlook.com mail-miypr05cu00207.inbound.protection.outlook.com mail-du2pr03cu00105.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 → 40.104.116.40
🔶 Autoconfig	b-byg.dk → 46.183.138.100

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 201ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records2 records 133ms

TXT Record
MS=ms84544308
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (b-byg.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.b-byg.dk	b-byg.dk

🔗 TLSA / DANE

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

🔐 DNSSEC203ms

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

🏷️ SOA0ms

Field	Value
Serial	2026090301
Primary NS (MNAME)	ns1.gigahost.dk
Responsible (RNAME)	hostmaster@b-byg.dk
Refresh	10800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

185ms

A

186ms

MX

37ms

AAAA

24ms

TXT

133ms

CAA

36ms

HTTPS

24ms

TLSA

597ms

SOA

0ms

MTA-STS

45ms

DNSSEC

203ms

SRV

201ms

Total

1239ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-03 18:55:48	1239ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-08-28 01:45:11	1525ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-08-20 09:19:42	7856ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-08-13 09:50:40	1437ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-08-09 02:08:01	1847ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-08-03 20:47:42	1355ms	5 NS 1 A 1 MX	❓ Unknown	View
2026-07-24 01:22:01	10372ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-07-16 22:19:50	2623ms	5 NS 1 A 1 MX	❓ Unknown	View
2026-07-10 14:28:13	1657ms	5 NS 1 A 1 MX	❓ Unknown	View
2026-07-07 00:39:14	1805ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-07-04 22:32:43	1414ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-07-03 14:50:20	1176ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-06-26 14:00:44	1453ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-06-24 15:55:07	891ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-06-21 22:31:07	5100ms	5 NS 1 A 1 MX	🔓 Insecure	View
2026-06-16 13:57:08	786ms	5 NS 1 A 1 MX	🔓 Insecure	View