b42.dk

📜 Historical scan 2026-06-20 19:50:59 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

b42.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 5 February 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.108.19 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by b42-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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#

4 records 80ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 80ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.108.19	600s	web15.curanet.dk	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records#

1 records 84ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	b42-dk.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca04::6 2a01:111:f403:ca09::4 2a01:111:f403:ca09::9 52.101.68.3 52.101.68.5 52.101.68.8 52.101.73.153	mail-db7pr03cu00401.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-as8pr05cu00401.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 → 52.98.208.104
🔶 Autoconfig	b42.dw9.dynamicweb-cms.com → 81.95.242.90

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

5 records 258ms

TXT Record
apple-domain-verification=Nv9ls1HYJ7aEpOgp
Foxit-domain-verification=f721141392ceab8cbbd88c977d37e519
MS=6FD2BC69B89E3D4B8D96CEF1485529851C38FE49
MS=ms82840098
v=spf1 ip4:188.228.103.124 ip4:94.137.133.145 include:spf.lmmail.dk Include:mail.techosting.dk include:spf.simply.com include:spf.curanet.dk include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (b42.dk)
-all (hard fail)	v=spf1 ip4:188.228.103.124 ip4:94.137.133.145 include:spf.lmmail.dk include:mail.techosting.dk include:spf.simply.com include:spf.curanet.dk include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.b42.dk)
p=reject	v=DMARC1; p=reject;

📬 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 2026-10-07 20:44:42

www	94.231.108.19 (AS48854) (address records, no CNAME)
www vs bare domain	Same network b42.dk: 94.231.108.19 (AS48854) www.b42.dk: 94.231.108.19 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-b42-dk._domainkey.boligforeningenb42dk.onmicrosoft.com	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 9/10 · policy: -all

warn 9 of the 10 allowed DNS lookups used: one more include can break SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

232ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026061600
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-07 17:09:49

Field	Value
Registrar	CURANET A/S
Registered	1998-02-05
Expires	2027-03-31 (165d)

📋 WHOIS#

⏱️ Lookup Timing#

80ms

84ms

AAAA

68ms

TXT

258ms

CAA

77ms

HTTPS

66ms

TLSA

261ms

SOA

0ms

MTA-STS

99ms

DNSSEC

232ms

SRV

142ms

Total

1269ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 18:30:41	890ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-10 03:52:42	1352ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-06 20:24:00	1643ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-30 00:00:32	678ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-28 06:19:08	1840ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-24 12:02:38	1994ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-22 01:43:56	938ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 19:50:59 shown	1269ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-16 13:57:22	903ms	4 NS 1 A 1 MX	🔒 Secure