jbwu.dk

📜 Historical scan 2026-06-17 13:21:25 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

jbwu.dk is a .dk domain served by 3 nameservers (ns1.e-studio.dk, ns2.e-studio.dk, ns3.e-studio.dk). It was registered on 27 May 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.242.131.123 is hosted by Christian Ebsen ApS (AS62121) in Denmark. Mail is handled by jbwu.dk. The zone is not DNSSEC-signed, 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#

3 records 123ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.e-studio.dk	195.242.131.5 2001:67c:564:fffc::11	ns1.e-studio.dk ns1.e-studio.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
ns2.e-studio.dk	2a00:1b18:2:3::2 62.69.152.34	ns2.e-studio.dk 34.34-46.152.69.62.in-addr.arpa	AS47527 DLX A/S AS47527 DLX A/S
ns3.e-studio.dk	193.200.90.183 2001:67c:564:fffc::13	ns3.e-studio.dk ns3.e-studio.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS

🌍 A Records#

1 records 113ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
195.242.131.123	—	sleipner.euhosting.dk	AS62121	Christian Ebsen ApS	195.242.130.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 214ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	jbwu.dk	195.242.131.123	sleipner.euhosting.dk	AS62121 Christian Ebsen ApS

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 319ms

TXT Record
v=spf1 +a +mx +ip4:195.242.131.123 include:_spf.e-studio.dk ~all

✉️ SPF#

Policy	Record (jbwu.dk)
~all (soft fail)	v=spf1 +a +mx +ip4:195.242.131.123 include:_spf.e-studio.dk ~all

📨 DMARC#

Policy	Record (_dmarc.jbwu.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 15:51:05

www CNAME	jbwu.dk (all on jbwu.dk) → 195.242.131.123 (AS62121)
www vs bare domain	Same network jbwu.dk: 195.242.131.123 (AS62121) www.jbwu.dk: 195.242.131.123 (AS62121)
Wildcard	No
Denial of existence	NSEC3 · 7 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	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: 3/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

509ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	unsigned answer

🏷️ SOA#

75ms

Field	Value
Serial	2026051801
Primary NS (MNAME)	ns1.e-studio.dk
Responsible (RNAME)	hostmaster@mailrelay.e-studio.dk
Refresh	3600s
Retry	1800s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-06 15:30:47

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2017-05-27
Expires	2027-05-31 (224d)

📋 WHOIS#

⏱️ Lookup Timing#

123ms

113ms

214ms

AAAA

220ms

TXT

319ms

CAA

218ms

HTTPS

87ms

TLSA

311ms

SOA

75ms

MTA-STS

269ms

DNSSEC

509ms

SRV

0ms

Total

2139ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 15:51:05	2185ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-28 00:52:11	496ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-23 13:12:22	1271ms	3 NS 1 A 1 MX	🔓 Insecure
2026-08-28 01:35:48	580ms	3 NS 1 A 1 MX	🔓 Insecure
2026-07-20 05:19:24	8976ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-17 13:21:25 shown	2139ms	3 NS 1 A 1 MX	🔓 Insecure