bt-byg.dk DNS records

🖥️ Nameservers2 records 44ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.nsd.dk	172.104.147.68	ns.nsd.dk	AS63949 Akamai Connected Cloud
ns2.nsd.dk	62.242.205.2	ns2.nsd.dk	AS3292 TDC Holding A/S

🌍 A Records1 records 67ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.111	3600s	linux17.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records1 records 54ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
20	3600s	btbyg-dk0e.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca04::2 2a01:111:f403:ca04::4 2a01:111:f403:ca04::9 52.101.209.153 52.101.68.18 52.101.68.29 52.101.73.4	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-du2pr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-am0pr83cu00404.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 → 40.104.116.8

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 204ms

TXT Record
MS=ms50550596
v=spf1 include:spf.protection.outlook.com include:spf.curanet.dk -all

✉️ SPF

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

🔗 TLSA / DANE

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

🔐 DNSSEC121ms

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	2026082506
Primary NS (MNAME)	ns.nsd.dk
Responsible (RNAME)	admin@ns.nsd.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

44ms

A

67ms

MX

54ms

AAAA

39ms

TXT

204ms

CAA

48ms

HTTPS

70ms

TLSA

594ms

SOA

0ms

MTA-STS

84ms

DNSSEC

121ms

SRV

345ms

Total

1323ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-25 15:54:04	1323ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-20 20:48:50	6743ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-18 19:24:12	9368ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-17 02:05:35	3275ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-07 04:39:28	1173ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-04 21:08:14	10061ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-30 13:05:36	1883ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-25 10:57:03	9441ms	2 NS 1 A 1 MX	❓ Unknown	View
2026-07-24 10:26:47	1059ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-15 10:13:07	1702ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-08 10:36:03	25288ms	2 NS 1 A 1 MX	❓ Unknown	View
2026-07-03 15:08:00	1091ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-30 14:50:46	809ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-29 21:59:53	1075ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-29 13:30:23	900ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-24 23:32:51	3637ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-24 09:00:41	912ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-23 22:33:29	2058ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-20 19:25:39	1168ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-20 13:18:16	828ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-16 17:45:58	2074ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-16 17:30:34	5357ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-16 17:30:32	846ms	2 NS 1 A 1 MX	🔓 Insecure	View