matematikcenter.dk

Records from scan: 2026-10-02 00:39:52 · 743ms total · last checked 2026-10-17 18:56 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

matematikcenter.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 24 August 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 176.57.89.144 is hosted by Telia Cygate AB (AS197308) in Sweden. Mail is handled by matematikcenter-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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#

4 records 30ms

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
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
176.57.89.144	1275s	—	AS197308	Telia Cygate AB	176.57.88.0/22	🇸🇪 Sweden	Stockholm

📧 MX Records#

1 records 39ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	matematikcenter-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::9 2a01:111:f403:ca04::b 2a01:111:f403:ca09::24 52.101.103.137 52.101.185.114 52.101.68.39 52.101.73.123	mail-db4pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-zrxpr04cu00102.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am6pr02cu00203.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	autodiscover.outlook.com → 52.98.154.152
🔶 Autoconfig	maildiscover.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 Records#

2 records 49ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

5 records 139ms

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#

Policy	Record (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

🧩 Web & zone#

checked 2026-10-02 00:39:52

www	Address record (no CNAME)
Wildcard	Yes: any name under the zone resolves
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

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

61ms

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

🏷️ SOA#

28ms

Field	Value
Serial	2026100100
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 2026-10-02 01:06:01

Field	Value
Registrar	Simply.com A/S
Registered	2011-08-24
Expires	2027-08-31 (316d)

📋 WHOIS#

⏱️ Lookup Timing#

30ms

32ms

39ms

AAAA

31ms

TXT

139ms

CAA

27ms

HTTPS

30ms

TLSA

359ms

SOA

28ms

MTA-STS

76ms

DNSSEC

61ms

SRV

49ms

Total

743ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 00:39:52 shown	743ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-30 00:20:08	1019ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-23 02:10:00	1434ms	4 NS 1 A 1 MX	🔒 Secure
2026-07-23 23:38:15	17217ms	4 NS 1 A 1 MX	🔒 Secure
2026-07-02 15:41:56	739ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-20 17:54:44	1370ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-18 01:33:49	949ms	4 NS 1 A 1 MX	🔒 Secure