b4failure.dk

📜 Historical scan 2026-07-23 07:29:30  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

b4failure.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 2 October 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by primary.silents.dk, secondary.silents.dk and 1 more. The zone is DNSSEC-signed and validates, has no 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   87ms
NameserverIP addressesPTRASN / 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#

🌍
No A records found

📧 MX Records#

3 records   114ms
PriorityTTLMail ServerIP addressesPTRASN
10 43200s primary.silents.dk 86.52.56.72 86-52-56-72.norlyscustomer.net AS39642 Sinal A/S
20 43200s secondary.silents.dk 86.52.56.72 86-52-56-72.norlyscustomer.net AS39642 Sinal A/S
30 43200s mail-backup.ndreassen.dk 87.62.100.86 0x573e6456.static.cust.fastspeed.dk AS3292 TDC Holding A/S

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscoverprimary.silents.dk → 86.52.56.72
🔶 Autoconfigprimary.silents.dk → 86.52.56.72

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records   428ms
TXT Record
v=spf1 include:amazonses.com include:silents.dk mx -all

✉️ SPF#

PolicyRecord (b4failure.dk)
-all (hard fail) v=spf1 include:amazonses.com include:silents.dk mx -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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-13 05:23:06
www CNAMEprimary.silents.dk (all on silents.dk)
www vs bare domainOnly www resolves
b4failure.dk: no address
www.b4failure.dk: 86.52.56.72 (AS39642)
(all like this)
WildcardYes: any name under the zone resolves
Denial of existenceNSEC zone can be walked (all names enumerable)
CDS / CDNSKEYPublished: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 6/10 · policy: -all

No problems found

🔏 ACME Challenge#

TypeNameValue
TXT _acme-challenge.b4failure.dk 13vK_cWEDYShzS8MnsJwn4SZHx3knMOVXcJufscp3M4
TXT _acme-challenge.b4failure.dk 1465XewiU0oCP4B6eCbOq-wAp8A1ezXr3Ej1WUxbEgQ
TXT _acme-challenge.b4failure.dk 1if9nx3WJXozAbMgnQBnPbbfycL8K01gMewF-ytL47U
TXT _acme-challenge.b4failure.dk 4uMBcYMH-pUJkC7xT-5O8jFfX3H77URQU0aTpYYrUW0
TXT _acme-challenge.b4failure.dk 8AZLeLYPWTGrUIVnl89tlTZWUrIjhw6CYda3xMDVsZc
TXT _acme-challenge.b4failure.dk BC3wu2btAwN4Z2fSIWT2daONxaZuCqzEc4r73TMEo-k
TXT _acme-challenge.b4failure.dk DzAwlb4xpb7EwZPIHMs384yfgV-tC2tU2cclri3zhUo
TXT _acme-challenge.b4failure.dk FFZCIg9qqGVtQ-ikTkeURq3Bp7SdXqSOHwgHo030r8Q
TXT _acme-challenge.b4failure.dk FVTLzP4oYNh3m-a5MFqHV72j7HEbzWszCvXf2YHYn98
TXT _acme-challenge.b4failure.dk H0YLCS6tRNQjU-blRz5x1k1qpHk26TemgMBpV-xAdv4
TXT _acme-challenge.b4failure.dk M68t_O0Wzkwr3W2GEgPzx691QRu0Zbn_gpeMMwa8rwY
TXT _acme-challenge.b4failure.dk TbAzRTmEumeUs2mgZeveHM6N63vpxOw2saKTH5OVU2o
TXT _acme-challenge.b4failure.dk Vt-iFbYNH-jbaMmXrQ5yp8F4Q1xGKpOaoXKUa2txpgU
TXT _acme-challenge.b4failure.dk YWg-ZTae5cQBGfb6-3octwkF1u6ipWF-BYow-OUf8Jg
TXT _acme-challenge.b4failure.dk YsXDFx4KVV8nxMpm-XsbSVtUYrYgLjce4IL7yVcGJos
TXT _acme-challenge.b4failure.dk _TI4E-Iaxd02D-b39ceS9_iue0rflyec7kAIGUqRgcw
TXT _acme-challenge.b4failure.dk bK2lZgquhwaa_iMs06tj9rfVN_0ozrKymtRqmRA354U
TXT _acme-challenge.b4failure.dk eb6XKdyRI4x_ht-8PzlV-wWUMIWxBBNpm5kfjLDfqYg
TXT _acme-challenge.b4failure.dk iDxmRFs7qwJ5WRnWGZc63tkMw2Sw6snjOJ2919p7Y94
TXT _acme-challenge.b4failure.dk ikCxPm8QMVIl98BavYTDeZoTPDIU_Zv7C_oXjraaEZ8
TXT _acme-challenge.b4failure.dk kv8bgxFy02efQ3lZw8GtCrVL84TyomBNZ2ovJO8f8LM
TXT _acme-challenge.b4failure.dk m1xRUThWacoSVitzKxmwfXcpTywnFwiR0gsLpuDu7-E
TXT _acme-challenge.b4failure.dk mUzBd5_aUEdU0e16rGxpR5HaTQQlBrtnMdspi7Ucz7U
TXT _acme-challenge.b4failure.dk o7nxfUe4h4z0SjPkrZvsUYpBNdL3TPdWUCxsK1hFTN8
TXT _acme-challenge.b4failure.dk rH8QSd1i28surQH7wzHx9bFvMtmOnrXmOM8uK1gHFgk
TXT _acme-challenge.b4failure.dk tK_QPf4IzkNaRWPwx1Dgu3UnHPtib4oMYprPMsKgIUg

🔗 TLSA / DANE#

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

🔐 DNSSEC#

8099ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsresolution failed: ncache nxrrset

🏷️ SOA#

0ms
FieldValue
Serial2026072300
Primary NS (MNAME)ns1.simply.com
Responsible (RNAME)hostmaster@simply.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s

📋 Registration#

WHOIS fetched 2026-10-02 21:01:11
FieldValue
RegistrarSimply.com A/S
Registered2006-10-02
Expires2026-10-31 (12d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
87ms
A
87ms
MX
114ms
AAAA
8072ms
TXT
428ms
CAA
89ms
HTTPS
88ms
TLSA
83ms
SOA
0ms
MTA-STS
66ms
DNSSEC
8099ms
SRV
227ms
Total
8911ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-13 05:23:06 1439ms 4 NS 0 A 3 MX 🔒 Secure
2026-10-02 20:53:12 748ms 4 NS 0 A 3 MX 🔒 Secure
2026-09-22 01:14:45 1354ms 4 NS 0 A 3 MX 🔒 Secure
2026-08-26 11:13:21 963ms 4 NS 0 A 3 MX 🔒 Secure
2026-07-23 07:29:30 shown 8911ms 4 NS 0 A 3 MX 🔒 Secure
2026-07-02 00:00:51 841ms 4 NS 0 A 3 MX 🔒 Secure
2026-06-16 13:57:27 794ms 4 NS 0 A 3 MX 🔒 Secure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone