mathu.dk

📜 Historical scan 2026-09-15 15:14:04 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

mathu.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 195.242.131.2 is hosted by Christian Ebsen ApS (AS62121) in Denmark. Mail is handled by mathu.dk. The zone is DNSSEC-signed and validates, 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 162ms

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 106ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
195.242.131.2	14400s	web.e-studio.dk	AS62121	Christian Ebsen ApS	195.242.130.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 140ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	14400s	mathu.dk	195.242.131.2	web.e-studio.dk	AS62121 Christian Ebsen ApS

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	195.242.131.2
🔶 Autoconfig	195.242.131.2

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 292ms

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

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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 2026-10-08 16:53:16

www CNAME	mathu.dk (all on mathu.dk) → 195.242.131.2 (AS62121)
www vs bare domain	Same network mathu.dk: 195.242.131.2 (AS62121) www.mathu.dk: 195.242.131.2 (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.

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.mathu.dk	M1VK0RW_Ouzwp8nLdEOD_0CSlznjN5reLTKkHLTxMW4

🔗 TLSA / DANE#

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

🔐 DNSSEC#

152ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

0ms

Field	Value
Serial	2026091101
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#

162ms

106ms

140ms

AAAA

121ms

TXT

312ms

CAA

294ms

HTTPS

290ms

TLSA

56ms

SOA

0ms

MTA-STS

160ms

DNSSEC

152ms

SRV

292ms

Total

712ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-24 13:12:47	485ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-15 15:14:04 shown	712ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-15 19:34:46	2597ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-25 21:53:21	574ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-24 05:13:08	978ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-24 03:05:21	823ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-22 08:04:29	1178ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 01:06:33	797ms	3 NS 1 A 1 MX	🔒 Secure