mathema.dk

📜 Historical scan 2026-06-18 06:51:48  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

mathema.dk is a .dk domain served by 2 nameservers (ns1.aveo.dk, ns2.aveo.dk). It was registered on 19 October 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.135 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mathema-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#

2 records   72ms
NameserverIP addressesPTRASN / ISP
ns1.aveo.dk 185.25.141.12
2a02:2339:4006:108::123		 ns1.curanet.dk
ns1.curanet.dk		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns2.aveo.dk 2a02:2339:1:10f::123:123
91.197.248.75		 ns2.curanet.dk
ns2.curanet.dk		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S

🌍 A Records#

1 records   73ms
IPTTLPTRASNISP / OrgCIDRCountryCity
185.21.41.135 — linux24.curanet.dk AS48854 team.blue Denmark A/S 185.21.40.0/22 🇩🇰 Denmark —

📧 MX Records#

1 records   86ms
PriorityTTLMail ServerIP addressesPTRASN
10 — mathema-dk.mail.protection.outlook.com 2a01:111:f403:ca04::10
2a01:111:f403:ca04::e
2a01:111:f403:ca09::7
2a01:111:f403:ca09::e
52.101.68.5
52.101.73.1
52.101.73.26
52.101.73.8		 mail-dbapr03cu00100.inbound.protection.outlook.com
mail-db8pr02cu00106.inbound.protection.outlook.com
mail-am9pr04cu00107.inbound.protection.outlook.com
mail-am7pr05cu00206.inbound.protection.outlook.com
mail-du2pr03cu00105.inbound.protection.outlook.com
mail-am3pr04cu00501.inbound.protection.outlook.com
mail-as9pr05cu01302.inbound.protection.outlook.com
mail-am0pr04cu00500.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#

ServiceCNAME / IP
🔷 Autodiscoverautodiscover.outlook.com → 52.98.154.152
🔶 Autoconfig185.21.41.135

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records   248ms
TXT Record
v=spf1 include:spf.protection.outlook.com include:spf.onlinemail.io -all

✉️ SPF#

PolicyRecord (mathema.dk)
-all (hard fail) v=spf1 include:spf.protection.outlook.com include:spf.onlinemail.io -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 2026-10-11 23:17:12
www185.21.41.135 (AS48854) (address records, no CNAME)
www vs bare domainSame network
mathema.dk: 185.21.41.135 (AS48854)
www.mathema.dk: 185.21.41.135 (AS48854)
WildcardYes: any name under the zone resolves
Denial of existenceNSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found
SelectorCNAMEKey
selector1 selector1-mathema-dk._domainkey.mathemadk.onmicrosoft.com RSA · ~2048 bit
selector2 selector2-mathema-dk._domainkey.mathemadk.onmicrosoft.com RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 4/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

194ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

71ms
FieldValue
Serial2025020602
Primary NS (MNAME)ns1.aveo.dk
Responsible (RNAME)hostmaster@curanet.dk
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)300s

📋 Registration#

WHOIS fetched 2026-10-17 06:53:27
FieldValue
RegistrarCURANET A/S
Registered2018-10-19
Expires2026-10-31 (12d)

🔗 Same registrant#

247 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

DomainRegistrar
247-laaseservice.dkCURANET A/S
247-låseservice.dkCURANET A/S
247laaseservice.dkCURANET A/S
247låseservice.dkCURANET A/S
2bteknik.dkPunktum dk A/S (direct)
aarstiderneshaveanlaeg.dkCURANET A/S
aatomrer.dkCURANET A/S
acaction.dkCURANET A/S
adornbymiv.dkCURANET A/S
aertebjerghundepension.dkCURANET A/S
afigima.dkCURANET A/S
ahrensborgtoemrer.dkCURANET A/S
ahrensborgtømrer.dkCURANET A/S
air-sol.dkCURANET A/S
ajkbyg.dkPunktum dk A/S (direct)
ajpolering.dkCURANET A/S
alarm365-medlemstilbud.dkCURANET A/S
alsautoogbådcenter.dkCURANET A/S
alsikring.dkCURANET A/S
amandashundeklip.dkCURANET A/S
angusbynisgaard.dkCURANET A/S
anne-kristensen.dkCURANET A/S
antonsanlaeg.dkCURANET A/S
arcticb.dkCURANET A/S
asliservice.dkCURANET A/S
astrupfriskole.dkCURANET A/S
autodoktoren.dkCURANET A/S
autohusnord.dkCURANET A/S
autotjek-recar.dkCURANET A/S
auxodev.dkCURANET A/S
auxodev2.dkCURANET A/S
aveo01.dkCURANET A/S
aveo03.dkCURANET A/S
aveo04.dkCURANET A/S
aveo05.dkCURANET A/S
aveo06.dkCURANET A/S
aveo08.dkCURANET A/S
aveo11.dkCURANET A/S
aveo12.dkCURANET A/S
aveo15.dkCURANET A/S
aveo18.dkCURANET A/S
aveo21.dkCURANET A/S
aveosupport.dkCURANET A/S
az-skadedyr.dkCURANET A/S
bakmandbelægning.dkCURANET A/S
bambusterrasse.dkCURANET A/S
basballebadogbolig.dkCURANET A/S
belderbos.dkCURANET A/S
bengtssonvp.dkCURANET A/S
betongaarden.dkCURANET A/S
bevaegelseforlivet.dkPunktum dk A/S (direct)
bjergesøgaard.dkCURANET A/S
bjergningsspil.dkCURANET A/S
blackswansexist.dkCURANET A/S
blhbyg.dkCURANET A/S
blokskæreskovl.dkCURANET A/S
blomsterpigen-aarhus.dkPunktum dk A/S (direct)
blueboatcharter.dkPunktum dk A/S (direct)
boernespecialist.dkCURANET A/S
bogbracing.dkCURANET A/S
bosch-ringkøbing.dkCURANET A/S
bounikt.dkCURANET A/S
braendekoeb.dkPunktum dk A/S (direct)
brasoe-fugespecialist.dkCURANET A/S
bv-ejendomme.dkCURANET A/S
byggesagsbehandling-aps.dkCURANET A/S
cacismulti-renovering.dkCURANET A/S
ce-mestringsvejleder.dkCURANET A/S
ch-byg.dkCURANET A/S
charlottesmedegaard.dkCURANET A/S
cityhairnails.dkCURANET A/S
collet-shop.dkCURANET A/S
colletshop.dkCURANET A/S
connectingminds.dkCURANET A/S
cpetersen-aps.dkCURANET A/S
csbygogmontage.dkCURANET A/S
cscafeogrestaurantinventar.dkCURANET A/S
csvvs.dkCURANET A/S
ctimport.dkCURANET A/S
damgaardsmedogmontage.dkCURANET A/S
damms-lak.dkPunktum dk A/S (direct)
danishanddenmark.dkPunktum dk A/S (direct)
danskportland.dkCURANET A/S
dansksmåbyg.dkCURANET A/S
davebyg.dkPunktum dk A/S (direct)
dclean.dkPunktum dk A/S (direct)
denlillekaelder.dkCURANET A/S
dinhavefe.dkCURANET A/S
ditstof.dkCURANET A/S
dmautoherning.dkCURANET A/S
e-w.dkCURANET A/S
ecmalerfirma.dkCURANET A/S
ecoterrazzo.dkCURANET A/S
efsundbybrygge.dkCURANET A/S
egholmsmobilefodterapi.dkCURANET A/S
ellenschmidt-rasmussen.dkPunktum dk A/S (direct)
ellinge-multiservice.dkCURANET A/S
emil-palm.dkCURANET A/S
englehusetdamp.dkCURANET A/S
enkelundgaard.dkPunktum dk A/S (direct)

Showing 100 of 247.

📋 WHOIS#

⏱️ Lookup Timing#

NS
72ms
A
73ms
MX
86ms
AAAA
76ms
TXT
248ms
CAA
73ms
HTTPS
72ms
TLSA
2132ms
SOA
71ms
MTA-STS
78ms
DNSSEC
194ms
SRV
4020ms
Total
6794ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-09-30 12:55:48 764ms 2 NS 1 A 1 MX 🔒 Secure
2026-09-23 21:00:01 843ms 2 NS 1 A 1 MX 🔒 Secure
2026-09-22 04:16:38 1088ms 2 NS 1 A 1 MX 🔒 Secure
2026-09-02 08:58:23 932ms 2 NS 1 A 1 MX 🔒 Secure
2026-08-27 01:01:48 1306ms 2 NS 1 A 1 MX 🔒 Secure
2026-07-02 11:12:41 2778ms 2 NS 1 A 1 MX 🔒 Secure
2026-06-25 12:38:44 679ms 2 NS 1 A 1 MX 🔒 Secure
2026-06-21 07:35:16 1203ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-18 06:51:48 shown 6794ms 2 NS 1 A 1 MX 🔒 Secure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone