mathics.dk

Records from scan: 2026-10-08 05:53:19 · 1771ms total · last checked 2026-10-17 19:15 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

mathics.dk is a .dk domain served by 2 nameservers (andronicus.ns.cloudflare.com, eleanor.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.56.126 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mathics-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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#

2 records 38ms

Nameserver	IP addresses	PTR	ASN / ISP
andronicus.ns.cloudflare.com	108.162.195.113 162.159.44.113 172.64.35.113 2606:4700:58::a29f:2c71 2803:f800:50::6ca2:c371 2a06:98c1:50::ac40:2371	andronicus.ns.cloudflare.com andronicus.ns.cloudflare.com andronicus.ns.cloudflare.com andronicus.ns.cloudflare.com andronicus.ns.cloudflare.com andronicus.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
eleanor.ns.cloudflare.com	108.162.194.205 162.159.38.205 172.64.34.205 2606:4700:50::a29f:26cd 2803:f800:50::6ca2:c2cd 2a06:98c1:50::ac40:22cd	eleanor.ns.cloudflare.com eleanor.ns.cloudflare.com eleanor.ns.cloudflare.com eleanor.ns.cloudflare.com eleanor.ns.cloudflare.com eleanor.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.56.126	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.151.44	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 45ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	mathics-dk.mail.protection.outlook.com	2a01:111:f403:ca09::22 2a01:111:f403:ca09::a 2a01:111:f403:ca38::8 2a01:111:f403:ca38::a 52.101.209.28 52.101.209.31 52.101.73.153 52.101.91.162	mail-am7pr02cu00302.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-wa4pr05cu00102.inbound.protection.outlook.com mail-cpjpr05cu00104.inbound.protection.outlook.com mail-cpjpr05cu00207.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-matpr04cu00302.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	104.21.56.126

🔷 AAAA Records (IPv6)#

2 records 42ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:387e	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3031::ac43:972c	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 31ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.56.126,172.67.151.44 ech=AEX+DQBB2QAgACAZ+Nu3g9VRCA5DX17BmRnOjdFrwaKT7df0bi51B1DWYwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:387e,2606:4700:3031::ac43:972c

📝 TXT Records#

1 records 190ms

TXT Record
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (mathics.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -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#

checked 2026-10-08 05:53:19

www	104.21.56.126 172.67.151.44 2606:4700:3030::6815:387e 2606:4700:3031::ac43:972c (AS13335) (address records, no CNAME)
www vs bare domain	Same network mathics.dk: 104.21.56.126 172.67.151.44 2606:4700:3030::6815:387e 2606:4700:3031::ac43:972c (AS13335) www.mathics.dk: 104.21.56.126 172.67.151.44 2606:4700:3030::6815:387e 2606:4700:3031::ac43:972c (AS13335)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-mathics-dk._domainkey.mathics.onmicrosoft.com	RSA · ~2048 bit
selector2	selector2-mathics-dk._domainkey.mathics.onmicrosoft.com	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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

123ms

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

🏷️ SOA#

50ms

Field	Value
Serial	2416891824
Primary NS (MNAME)	andronicus.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

38ms

45ms

AAAA

42ms

TXT

190ms

CAA

41ms

HTTPS

31ms

TLSA

951ms

SOA

50ms

MTA-STS

54ms

DNSSEC

123ms

SRV

56ms

Total

1771ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 05:53:19 shown	1771ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-09 06:51:12	1641ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-08 15:38:43	17305ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-10 12:35:52	1739ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-18 07:02:36	3029ms	2 NS 2 A 1 MX	🔓 Insecure