guestu.dk

📜 Historical scan 2026-06-17 10:20:38 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

guestu.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 3 February 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.200.90.180 is hosted by Christian Ebsen ApS (AS62121) in Denmark. Mail is handled by mail.guestu.dk. The zone is not DNSSEC-signed, 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#

3 records 155ms

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 144ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.200.90.180	—	web8.e-studio.dk	AS62121	Christian Ebsen ApS	193.200.90.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 138ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mail.guestu.dk	193.200.90.180	web8.e-studio.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 678ms

TXT Record
v=spf1 +a +mx +ip4:193.200.90.180 include:_spf.e-studio.dk ~all

✉️ SPF#

Policy	Record (guestu.dk)
~all (soft fail)	v=spf1 +a +mx +ip4:193.200.90.180 include:_spf.e-studio.dk ~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 2026-10-07 22:25:29

www CNAME	guestu.dk (all on guestu.dk) → 176.9.48.56 (AS24940)
www vs bare domain	Same network guestu.dk: 176.9.48.56 (AS24940) www.guestu.dk: 176.9.48.56 (AS24940)
Wildcard	No

✍️ 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#

347ms

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

🏷️ SOA#

147ms

Field	Value
Serial	2026052401
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 2026-10-02 18:23:02

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2022-02-03
Expires	2027-02-02 (107d)

📋 WHOIS#

⏱️ Lookup Timing#

155ms

144ms

138ms

AAAA

142ms

TXT

678ms

CAA

138ms

HTTPS

157ms

TLSA

412ms

SOA

147ms

MTA-STS

97ms

DNSSEC

347ms

SRV

0ms

Total

2248ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 17:43:27	588ms	4 NS 1 A 1 MX	🔓 Insecure
2026-10-01 17:41:08	1693ms	4 NS 1 A 1 MX	🔓 Insecure
2026-09-29 17:16:55	4452ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-24 17:04:19	506ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-04 20:14:32	483ms	3 NS 1 A 1 MX	🔓 Insecure
2026-08-25 09:19:56	9421ms	3 NS 1 A 1 MX	🔓 Insecure
2026-07-25 13:12:39	764ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-27 16:59:36	631ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-17 10:20:38 shown	2248ms	3 NS 1 A 1 MX	🔓 Insecure