mathfix.dk

📜 Historical scan 2026-10-04 06:04:33 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

mathfix.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 24 February 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 216.150.1.1 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by smtp.google.com. The zone is DNSSEC-signed and validates, 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 48ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 36ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
216.150.1.1	3600s	—	AS16509	Amazon.com, Inc.	216.150.1.0/24	🇺🇸 United States	—

📧 MX Records#

1 records 25ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	smtp.google.com	209.85.233.26 209.85.233.27 2a00:1450:4010:c01::1a 2a00:1450:4010:c01::1a 2a00:1450:4010:c03::1a 2a00:1450:4010:c03::1a 2a00:1450:4010:c03::1b 2a00:1450:4010:c03::1b 2a00:1450:4010:c0e::1b 2a00:1450:4010:c0e::1b 64.233.161.26 74.125.131.26 74.125.131.27	lr-in-f26.1e100.net lr-in-f27.1e100.net lh-in-f26.1e100.net lh-in-x1a.1e100.net lr-in-x1a.1e100.net lr-in-f26.1e100.net lr-in-x1b.1e100.net lr-in-f27.1e100.net lu-in-f27.1e100.net lu-in-x1b.1e100.net lh-in-f26.1e100.net lu-in-f26.1e100.net lu-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 144ms

TXT Record
google-site-verification=52Jq2Kc4_vG38hn8BETDlehceN19U-Sh85kGXZt90ek

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

Policy	Record (_dmarc.mathfix.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 2026-10-12 20:30:33

www CNAME	345bc508b2026985.vercel-dns-017.com (all on vercel-dns-017.com) → 216.150.1.193 216.150.16.193 (AS16509)
www vs bare domain	Same network mathfix.dk: 216.150.1.1 (AS16509) www.mathfix.dk: 216.150.1.193 216.150.16.193 (AS16509)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

92ms

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

🏷️ SOA#

26ms

Field	Value
Serial	2026100300
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-05 05:14:03

Field	Value
Registrar	Simply.com A/S
Registered	2026-02-24
Expires	2027-02-23 (124d)

📋 WHOIS#

⏱️ Lookup Timing#

48ms

36ms

25ms

AAAA

31ms

TXT

144ms

CAA

22ms

HTTPS

51ms

TLSA

47ms

SOA

26ms

MTA-STS

57ms

DNSSEC

92ms

SRV

55ms

Total

511ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 20:30:33	423ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-04 06:04:33 shown	511ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-30 05:44:21	444ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-18 08:39:24	599ms	3 NS 1 A 1 MX	🔒 Secure