cser.dk
Last scanned: 2026-08-31 05:30:05  ·  429ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   34ms
NameserverIP addressesPTRASN / 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   34ms
IPTTLPTRASNISP / OrgCIDRCountryCity
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   137ms
TXT Record
v=spf1 include:spf.au.dk -all
✉️ SPF
PolicyRecord (cser.dk)
-all (hard fail) v=spf1 include:spf.au.dk -all
📨 DMARC
PolicyRecord (_dmarc.cser.dk)
p=reject v=DMARC1;p=reject;pct=100;rua=mailto:ced1e70d2c70635@rep.dmarcanalyzer.com;ruf=mailto:ced1e70d2c70635@for.dmarcanalyzer.com;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)
🔐 DNSSEC114ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial3649
Primary NS (MNAME)infobloxgm3.au.dk
Responsible (RNAME)hostmaster@dpunet.dk
Refresh10800s
Retry1080s
Expire2419200s
Minimum (neg-cache TTL)900s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
34ms
A
34ms
MX
40ms
AAAA
34ms
TXT
137ms
CAA
34ms
HTTPS
36ms
TLSA
34ms
SOA
0ms
MTA-STS
45ms
DNSSEC
114ms
SRV
43ms
Total
429ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-31 05:30:05 429ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-30 02:02:51 1222ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-29 00:30:33 703ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-27 19:25:22 371ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-26 17:56:09 459ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-25 13:29:19 1602ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-24 13:02:42 648ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-23 09:11:45 608ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-22 08:47:36 1120ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-21 08:36:05 3582ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-20 08:13:12 585ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-19 07:43:00 2597ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-18 06:02:22 683ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-17 04:12:05 2175ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-16 01:53:51 1099ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-14 08:46:26 3259ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-12 01:28:54 2511ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-10 11:42:40 632ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-08 13:20:24 765ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-06 20:25:09 632ms 2 NS 1 A 0 MX 🔒 Secure View
2026-07-29 10:38:07 15544ms 2 NS 1 A 0 MX 🔒 Secure View
2026-07-27 22:51:24 1002ms 2 NS 1 A 0 MX 🔒 Secure View
2026-07-26 22:25:46 599ms 2 NS 1 A 0 MX 🔒 Secure View
2026-07-25 21:18:32 8564ms 2 NS 1 A 0 MX 🔒 Secure View
2026-07-24 21:01:50 16414ms 2 NS 1 A 0 MX 🔒 Secure View
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