rsf1935.dk

📜 Historical scan 2026-09-22 21:51:20 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rsf1935.dk is a .dk domain served by 5 nameservers (ns1.e-studio.dk, ns2.e-studio.dk, ns3.e-studio.dk and 2 more). It was registered on 8 April 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.200.90.182 is hosted by Christian Ebsen ApS (AS62121) in Denmark. Mail is handled by mail.rsf1935.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#

5 records 27ms

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 ns2.e-studio.dk	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
ns4.e-studio.dk	185.210.177.89	—	AS51377 CoMaSys ApS
ns5.e-studio.dk	148.251.215.66	static.66.215.251.148.clients.your-server.de	AS24940 Hetzner Online GmbH

🌍 A Records#

1 records 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.200.90.182	300s	web12.e-studio.dk	AS62121	Christian Ebsen ApS	193.200.90.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.rsf1935.dk	49.12.84.170	cde4.duelhost.dk	AS24940 Hetzner Online GmbH

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	193.200.90.182
🔶 Autoconfig	193.200.90.182

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 41ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	0	0	443	cpanelemaildiscovery.cpanel.net

📝 TXT Records#

1 records 123ms

TXT Record
v=spf1 +a +mx +ip4:193.200.90.182 include:_spf.e-studio.dk +include:relay.mailchannels.net -all

✉️ SPF#

Policy	Record (rsf1935.dk)
-all (hard fail)	v=spf1 +a +mx +ip4:193.200.90.182 include:_spf.e-studio.dk +include:relay.mailchannels.net -all

📨 DMARC#

Policy	Record (_dmarc.rsf1935.dk)
p=none (monitor only)	v=DMARC1; p=none; sp=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 2026-10-09 21:44:34

www CNAME	cdn.webflow.com (all on webflow.com) → 198.202.211.1 2620:cb:2000::1 (AS13335 AS209242)
www vs bare domain	Different networks rsf1935.dk: 193.200.90.182 (AS62121) www.rsf1935.dk: 198.202.211.1 2620:cb:2000::1 (AS13335 AS209242) (all like this)
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: 4/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.rsf1935.dk	Cw1-ngngXuUtfjq3vqoGHBarojZsJwwCpetZshc0T9M

🔗 TLSA / DANE#

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

🔐 DNSSEC#

112ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026092003
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 2026-10-10 18:01:06

Field	Value
Registrar	dns.services ApS
Registered	2016-04-08
Expires	2028-04-30 (550d)

📋 WHOIS#

⏱️ Lookup Timing#

27ms

35ms

AAAA

31ms

TXT

123ms

CAA

35ms

HTTPS

37ms

TLSA

49ms

SOA

0ms

MTA-STS

58ms

DNSSEC

112ms

SRV

41ms

Total

969ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 16:50:33	2370ms	5 NS 1 A 1 MX	🔓 Insecure
2026-09-27 15:37:57	566ms	5 NS 1 A 1 MX	🔓 Insecure
2026-09-22 21:51:20 shown	969ms	5 NS 1 A 1 MX	🔓 Insecure
2026-09-12 20:04:06	2793ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-17 13:16:56	1664ms	2 NS 1 A 1 MX	🔓 Insecure