matematikdidaktik.dk DNS records

🖥️ Nameservers2 records 180ms

Nameserver	IP addresses	PTR	ASN / ISP
ns3.au.dk	20.73.178.34	ns3.au.dk	AS8075 Microsoft Corporation
ns4.au.dk	185.45.20.154	ns4.au.dk	AS62138 Aarhus Universitet

🌍 A Records1 records 99ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.45.20.48	900s	—	AS62138	Aarhus Universitet	185.45.20.0/22	🇩🇰 Denmark	Aarhus

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 372ms

TXT Record
v=spf1 -all

✉️ SPF

Policy	Record (matematikdidaktik.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC

Policy	Record (_dmarc.matematikdidaktik.dk)
p=reject	v=DMARC1;p=reject;pct=100;aspf=r;

📬 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

🔗 TLSA / DANE

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

🔐 DNSSEC311ms

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

🏷️ SOA0ms

Field	Value
Serial	2491
Primary NS (MNAME)	infobloxgm3.au.dk
Responsible (RNAME)	auit-dns@au.dk
Refresh	10800s
Retry	1080s
Expire	2419200s
Minimum (neg-cache TTL)	900s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

180ms

A

99ms

MX

119ms

AAAA

140ms

TXT

372ms

CAA

126ms

HTTPS

93ms

TLSA

170ms

SOA

0ms

MTA-STS

153ms

DNSSEC

311ms

SRV

133ms

Total

1783ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 11:40:04	1783ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-29 20:41:01	425ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-28 17:10:17	441ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-27 15:25:05	420ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-26 14:07:41	416ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-25 06:49:20	1138ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-24 06:28:35	1662ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-23 06:05:39	598ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-22 05:54:41	821ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-21 05:33:28	2664ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-20 04:42:45	1777ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-19 03:50:14	3612ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-16 16:15:30	1052ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-14 21:33:25	8645ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-12 10:52:11	2419ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-11 03:01:11	2500ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-09 13:03:25	571ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-08 03:16:14	830ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-08-06 17:29:58	2218ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-07-29 15:57:22	3249ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-07-27 23:37:50	700ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-07-26 22:55:56	524ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-07-25 22:28:06	8518ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-07-24 21:45:44	565ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-07-23 20:21:35	838ms	2 NS 1 A 0 MX	🔒 Secure	View