21781202.dk

📜 Historical scan 2026-06-16 13:25:31 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

21781202.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 23 June 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.21781202.dk, mx4.spamfri.dk and 3 more. 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 769ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.e-studio.dk	—	—	—
ns2.e-studio.dk	—	—	—
ns3.e-studio.dk	—	—	—

🌍 A Records#

1 records 689ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.200.90.180	—	web8.e-studio.dk	AS62121	—	—	—	—

📧 MX Records#

5 records 914ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mail.21781202.dk	193.200.90.180	web8.e-studio.dk	AS62121 Christian Ebsen ApS
10	—	mx4.spamfri.dk	193.200.91.108	mx4.spamfri.dk	AS62121 Christian Ebsen ApS
20	—	mx2.spamfri.dk	193.200.91.109	mx2.spamfri.dk	AS62121 Christian Ebsen ApS
30	—	mx3.spamfri.dk	62.69.152.43 62.69.152.43	43.34-46.152.69.62.in-addr.arpa mx3.spamfri.dk	AS47527 DLX A/S AS47527 DLX A/S
40	—	mx1.spamfri.dk	195.242.131.16	mx1.spamfri.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 2089ms

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

✉️ SPF#

Policy	Record (21781202.dk)
~all (soft fail)	v=spf1 +a +mx +ip4:193.200.90.180 include:_spf.e-studio.dk ~all

📨 DMARC#

Policy	Record (_dmarc.21781202.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 2026-10-15 04:37:51

www CNAME	21781202.dk (all on 21781202.dk) → 193.200.90.180 (AS62121)
www vs bare domain	Same network 21781202.dk: 193.200.90.180 (AS62121) www.21781202.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

🔗 TLSA / DANE#

4 records 1036ms

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#

1628ms

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

🏷️ SOA#

659ms

Field	Value
Serial	2026052302
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 2026-10-14 08:15:45

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2007-06-23
Expires	2027-06-30 (256d)

🔗 Same registrant#

5 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
alba.dk	Punktum dk A/S (direct)
baklundgaard.dk	Punktum dk A/S (direct)
bierfestdanmark.dk	Punktum dk A/S (direct)
oktoberfestdanmark.dk	Punktum dk A/S (direct)
unstrung.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

769ms

689ms

914ms

AAAA

744ms

TXT

2089ms

CAA

791ms

HTTPS

674ms

TLSA

1036ms

SOA

659ms

MTA-STS

911ms

DNSSEC

1628ms

SRV

0ms

Total

11560ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 11:44:18	406ms	3 NS 1 A 4 MX	🔓 Insecure
2026-10-01 07:50:03	626ms	3 NS 1 A 4 MX	🔓 Insecure
2026-09-27 20:00:53	9598ms	3 NS 1 A 4 MX	🔓 Insecure
2026-09-23 17:49:49	786ms	3 NS 1 A 4 MX	🔓 Insecure
2026-08-28 07:13:48	999ms	3 NS 1 A 4 MX	🔓 Insecure
2026-08-27 01:11:57	751ms	3 NS 1 A 4 MX	🔓 Insecure
2026-08-24 16:39:18	710ms	3 NS 1 A 4 MX	🔓 Insecure
2026-07-24 10:28:31	8846ms	3 NS 1 A 4 MX	🔓 Insecure
2026-07-23 08:53:39	1082ms	3 NS 1 A 4 MX	🔓 Insecure
2026-07-22 04:57:50	1213ms	3 NS 1 A 5 MX	🔓 Insecure
2026-07-20 17:33:55	757ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-19 08:42:40	691ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-18 06:28:06	1763ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-17 03:29:32	765ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-15 13:53:35	677ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-14 00:46:39	810ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-10 19:13:13	720ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-09 03:03:25	1055ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-06 11:15:29	811ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-05 05:28:22	479ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-04 05:26:26	737ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-03 13:33:06	2541ms	1 NS 0 A 0 MX	❓ Unknown
2026-06-23 22:03:02	919ms	3 NS 1 A 5 MX	🔓 Insecure
2026-06-23 18:03:46	863ms	3 NS 1 A 5 MX	🔓 Insecure
2026-06-16 13:25:31 shown	11560ms	3 NS 1 A 5 MX	🔓 Insecure