matematikcenter.dk

📜 Historical scan 2026-06-18 01:33:49 · ← Latest scan

⬇ 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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

4 records 53ms

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 52ms

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

📧 MX Records#

1 records 53ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	matematikcenter-dk.mail.protection.outlook.com	2a01:111:f403:ca04::6 2a01:111:f403:ca04::9 2a01:111:f403:ca09::b 2a01:111:f403:ca09::e 52.101.68.12 52.101.68.21 52.101.73.16 52.101.73.4	mail-db4pr02cu00406.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-am0pr83cu00404.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 → 40.104.116.56
🔶 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 161ms

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 150ms

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#

latest probe, not this scan · checked 2026-10-22 18:10:30

www	176.57.89.144 (AS197308) (address records, no CNAME)
www vs bare domain	Same network matematikcenter.dk: 176.57.89.144 (AS197308) www.matematikcenter.dk: 176.57.89.144 (AS197308)
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#

144ms

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

🏷️ SOA#

39ms

Field	Value
Serial	2025111800
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 (307d)

📋 WHOIS#

⏱️ Lookup Timing#

53ms

52ms

53ms

AAAA

41ms

TXT

150ms

CAA

51ms

HTTPS

39ms

TLSA

257ms

SOA

39ms

MTA-STS

132ms

DNSSEC

144ms

SRV

161ms

Total

949ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-22 18:10:30	623ms	4 NS 1 A 1 MX	🔒 Secure
2026-10-02 00:39:52	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 shown	949ms	4 NS 1 A 1 MX	🔒 Secure