ulfeldt.dk

Records from scan: 2026-10-08 12:36:50 · 492ms total · last checked 2026-10-16 21:41 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ulfeldt.dk is a .dk domain served by 3 nameservers (ns1.e-studio.dk, ns2.e-studio.dk, ns3.e-studio.dk). It 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 mx4.spamfri.dk, mx2.spamfri.dk and 2 more. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

3 records 34ms

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

🌍 A Records#

1 records 28ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.200.90.180	300s	web8.e-studio.dk	AS62121	Christian Ebsen ApS	193.200.90.0/23	🇩🇰 Denmark	—

📧 MX Records#

4 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx4.spamfri.dk	193.200.91.108 2001:67c:564:fffd::4001	mx4.spamfri.dk mx4.spamfri.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
20	300s	mx2.spamfri.dk	193.200.91.109 2001:67c:564:fffd::2001	mx2.spamfri.dk mx2.spamfri.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
30	300s	mx3.spamfri.dk	2a00:1b18:2:3:fe::2 62.69.152.43	mx3.spamfri.dk mx3.spamfri.dk	AS47527 DLX A/S AS47527 DLX A/S
40	300s	mx1.spamfri.dk	195.242.131.16 2001:67c:564:fffd::1001	mx1.spamfri.dk mx1.spamfri.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	193.200.90.180
🔶 Autoconfig	193.200.90.180

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 98ms

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

📝 TXT Records#

1 records 164ms

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

✉️ SPF#

Policy	Record (ulfeldt.dk)
~all (soft fail)	v=spf1 ip4:193.200.90.180 include:_spf.e-studio.dk +a +mx ~all

📨 DMARC#

Policy	Record (_dmarc.ulfeldt.dk)
p=reject	v=DMARC1;p=reject; adkim=s; aspf=s

📬 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#

checked 2026-10-08 12:36:50

www CNAME	ulfeldt.dk (all on ulfeldt.dk) → 193.200.90.180 (AS62121)
www vs bare domain	Same network ulfeldt.dk: 193.200.90.180 (AS62121) www.ulfeldt.dk: 193.200.90.180 (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

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.ulfeldt.dk	Vg7GKp5hsD7q3Rdrf4Tj1BpJuKGdvcLm9NJCau5EWa4

🔗 TLSA / DANE#

4 records 64ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.spamfri.dk	DANE-EE · SPKI · SHA-256	884451547A03D0AC2F628D943839BAA6…
SMTP _25._tcp.mx2.spamfri.dk	DANE-EE · SPKI · SHA-256	6598C93F79B95376BB8099E9AC862167…
SMTP _25._tcp.mx3.spamfri.dk	DANE-EE · SPKI · SHA-256	BBFB0694919290E5BC9D6E2C6F47D846…
SMTP _25._tcp.mx4.spamfri.dk	DANE-EE · SPKI · SHA-256	4EE743A99328AEF5142706CA5FD3AD61…

🔐 DNSSEC#

66ms

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

🏷️ SOA#

47ms

Field	Value
Serial	2026092503
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#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

34ms

28ms

35ms

AAAA

25ms

TXT

164ms

CAA

33ms

HTTPS

32ms

TLSA

64ms

SOA

47ms

MTA-STS

49ms

DNSSEC

66ms

SRV

98ms

Total

492ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 12:36:50 shown	492ms	3 NS 1 A 4 MX	🔓 Insecure
2026-09-25 14:45:46	731ms	3 NS 1 A 4 MX	🔓 Insecure
2026-09-24 14:38:49	816ms	3 NS 1 A 4 MX	🔓 Insecure
2026-09-23 14:01:57	780ms	3 NS 1 A 4 MX	🔓 Insecure
2026-07-24 18:29:03	1401ms	3 NS 1 A 4 MX	🔓 Insecure
2026-07-23 15:42:13	9723ms	3 NS 1 A 4 MX	🔓 Insecure
2026-06-22 07:25:12	818ms	3 NS 1 A 5 MX	🔓 Insecure
2026-06-20 06:08:53	971ms	3 NS 1 A 5 MX	🔓 Insecure
2026-06-17 22:03:21	921ms	3 NS 1 A 5 MX	🔓 Insecure