matematikcenter.dk
Last scanned: 2026-07-23 23:38:15  ·  17217ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   859ms
NameserverIP addressesPTRASN / 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
ns4.simply.com 91.197.248.80 ns4.simply.com AS48854 team.blue Denmark A/S
🌍 A Records1 records   134ms
IPTTLPTRASNISP / OrgCIDRCountryCity
176.57.89.144 3600s — AS197308 Telia Cygate AB 176.57.88.0/22 🇸🇪 Sweden Stockholm
📧 MX Records1 records   862ms
PriorityTTLMail ServerIP addressesPTRASN
0 3600s matematikcenter-dk.mail.protection.outlook.com 52.101.68.21
52.101.68.29
52.101.68.32
52.101.73.153		 mail-db4pr02cu00205.inbound.protection.outlook.com
mail-dbapr03cu00105.inbound.protection.outlook.com
—
mail-as8pr05cu00401.inbound.protection.outlook.com		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverautodiscover.outlook.com → 40.104.116.8
🔶 Autoconfigmaildiscover.simply.com → 94.231.108.222
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
🔌 SRV Records2 records   1611ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 10 10 443 maildiscover.simply.com
_sipfederationtls._tcp 100 1 5061 sipfed.online.lync.com
📝 TXT Records5 records   4295ms
TXT Record
google-site-verification=heRHz5DvhFGb8mECr_4luEGe6Qxtc93QNtS6E12KhfM
google-site-verification=LiE0Q6qVtcpOr7xRLGC9ac9-Obr5y1deCeOOHzenU7Y
google-site-verification=WAvM-1iZbgRFH-yQfTHjWDvndZSQ5Dbnvb3yGaYVxhk
MS=ms92502050
v=spf1 include:spf.protection.outlook.com include:spf.simply.com -all
✉️ SPF
PolicyRecord (matematikcenter.dk)
-all (hard fail) v=spf1 include:spf.protection.outlook.com include:spf.simply.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
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC2058ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA25ms
FieldValue
Serial2025111800
Primary NS (MNAME)ns1.simply.com
Responsible (RNAME)hostmaster@simply.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
859ms
A
134ms
MX
862ms
AAAA
195ms
TXT
4295ms
CAA
198ms
HTTPS
207ms
TLSA
4236ms
SOA
25ms
MTA-STS
378ms
DNSSEC
2058ms
SRV
1611ms
Total
17217ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-07-23 23:38:15 17217ms 4 NS 1 A 1 MX 🔒 Secure View
2026-07-02 15:41:56 739ms 4 NS 1 A 1 MX 🔒 Secure View
2026-06-20 17:54:44 1370ms 4 NS 1 A 1 MX 🔒 Secure View
2026-06-18 01:33:49 949ms 4 NS 1 A 1 MX 🔒 Secure View
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