b4net.dk DNS records

🖥️ Nameservers2 records 53ms

Nameserver	IP addresses	PTR	ASN / ISP
perla.ns.cloudflare.com	108.162.194.203 162.159.38.203 172.64.34.203 2606:4700:50::a29f:26cb 2803:f800:50::6ca2:c2cb 2a06:98c1:50::ac40:22cb	perla.ns.cloudflare.com perla.ns.cloudflare.com perla.ns.cloudflare.com perla.ns.cloudflare.com perla.ns.cloudflare.com perla.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
wells.ns.cloudflare.com	108.162.195.125 162.159.44.125 172.64.35.125 2606:4700:58::a29f:2c7d 2803:f800:50::6ca2:c37d 2a06:98c1:50::ac40:237d	wells.ns.cloudflare.com wells.ns.cloudflare.com wells.ns.cloudflare.com wells.ns.cloudflare.com wells.ns.cloudflare.com wells.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records1 records 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.96.183.34	300s	server.b4net.dk	AS24800	BornFiber Service Provider ApS	185.96.180.0/22	🇩🇰 Denmark	Frederiksberg

📧 MX Records2 records 66ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	bf.b4net.dk	185.96.183.34	server.b4net.dk	AS24800 BornFiber Service Provider ApS
20	300s	ovh.b4net.dk	51.68.173.215	ovh.b4net.dk	AS16276 OVH SAS

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	b4net.dk → 185.96.183.34
🔶 Autoconfig	b4net.dk → 185.96.183.34

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records2 records 116ms

Service	Priority	Weight	Port	Target
_sip._tcp	0	0	5060	sip01.iptel.org
_sip._udp	0	0	5060	sip01.iptel.org

📝 TXT Records2 records 309ms

TXT Record
google-site-verification=sz2BXB1GTMl0K3y3m9dcgkLt83gKaUydgvi_4hMAvAA
v=spf1 ip4:185.96.183.34 ip4:83.88.251.22 ip4:51.68.173.215 ip4:137.74.115.1 ip6:2001:41d0:701:1100::2d36 ip6:2001:41d0:302:2100::220b a mx -all

✉️ SPF

Policy	Record (b4net.dk)
-all (hard fail)	v=spf1 ip4:185.96.183.34 ip4:83.88.251.22 ip4:51.68.173.215 ip4:137.74.115.1 ip6:2001:41d0:701:1100::2d36 ip6:2001:41d0:302:2100::220b a mx -all

📨 DMARC

Policy	Record (_dmarc.b4net.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:postmaster@b4net.dk; ruf=mailto:postmaster@b4net.dk

📬 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.b4net.dk	b4net.dk

🔗 TLSA / DANE

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

🔐 DNSSEC83ms

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

🏷️ SOA0ms

Field	Value
Serial	2412212195
Primary NS (MNAME)	perla.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

53ms

A

33ms

MX

66ms

AAAA

60ms

TXT

309ms

CAA

56ms

HTTPS

73ms

TLSA

135ms

SOA

0ms

MTA-STS

85ms

DNSSEC

83ms

SRV

116ms

Total

953ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 02:31:50	953ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-26 10:36:18	1452ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-15 09:31:04	4782ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-10 09:55:53	1128ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-06 14:00:07	1655ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-17 13:29:08	16963ms	2 NS 0 A 2 MX	🔒 Secure	View
2026-06-26 08:11:12	993ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-25 23:00:03	1365ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-23 06:45:51	1880ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-16 13:57:33	847ms	2 NS 1 A 2 MX	🔒 Secure	View