2b-c.dk DNS records

🖥️ Nameservers4 records 46ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.bdm.microsoftonline.com	13.107.236.208 2603:1061:0:700::d0	ns1-208.azure-dns.com ns1-208.azure-dns.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns2.bdm.microsoftonline.com	150.171.21.208 2620:1ec:8ec:700::d0	ns2-208.azure-dns.net ns2-208.azure-dns.net	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns3.bdm.microsoftonline.com	204.14.183.208 2a01:111:4000:700::d0	ns3-208.azure-dns.org ns3-208.azure-dns.org	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns4.bdm.microsoftonline.com	208.84.5.208 2620:1ec:bda:700::d0	ns4-208.azure-dns.info ns4-208.azure-dns.info	AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🌍 A Records1 records 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
85.235.243.105	3600s	105.0-127.243.235.85.in-addr.arpa	AS3308	Norlys Telco A/S	85.235.224.0/19	🇩🇰 Denmark	Hørsholm

📧 MX Records1 records 48ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	2bc-dk0e.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::9 2a01:111:f403:ca09::b 2a01:111:f403:ca09::e 52.101.103.137 52.101.181.153 52.101.73.155 52.101.73.6	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-am7pr02cu00203.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 → 40.104.116.24

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 71ms

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

📝 TXT Records2 records 184ms

TXT Record
mscid=BNZ2oHoLyyZL+upUimc+eXw2avpMpv6xI8QSnX+BgYGXMzWKRyHL7853oxOnoodQtCY7J98PNonDi4/M12YY3Q==
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (2b-c.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

🔗 TLSA / DANE

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

🔐 DNSSEC84ms

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	1
Primary NS (MNAME)	ns1.bdm.microsoftonline.com
Responsible (RNAME)	azuredns-hostmaster@microsoft.com
Refresh	3600s
Retry	300s
Expire	2419200s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

46ms

A

51ms

MX

48ms

AAAA

43ms

TXT

184ms

CAA

45ms

HTTPS

60ms

TLSA

382ms

SOA

0ms

MTA-STS

54ms

DNSSEC

84ms

SRV

71ms

Total

968ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 19:28:39	968ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-24 21:29:59	909ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-30 14:22:45	869ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-24 04:48:23	1071ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-23 22:48:51	1174ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-20 20:50:48	1257ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-20 18:55:40	1005ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 13:16:52	9772ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-16 13:12:41	990ms	4 NS 1 A 1 MX	🔓 Insecure	View