teachcare.dk

📜 Historical scan 2026-09-27 20:23:58  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

teachcare.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 3 June 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.215.235 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.mailpod16-cph3.g1i.one.com, mx2.mailpod16-cph3.g1i.one.com and 2 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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   220ms
NameserverIP addressesPTRASN / ISP
ns01.one.com 195.206.121.10
2001:67c:28cc::10		 ns01.one.com
ns01.one.com		 AS197495 One.com A/S
AS197495 One.com A/S
ns02.one.com 185.10.11.10
2001:67c:3c0::10		 ns02.one.com
ns02.one.com		 AS51468 One.com A/S
AS51468 One.com A/S

🌍 A Records#

1 records   37ms
IPTTLPTRASNISP / OrgCIDRCountryCity
46.30.215.235 3600s webcluster2.webpod18-cph3.g1i.one AS51468 One.com A/S 46.30.208.0/21 🇩🇰 Denmark Copenhagen

📧 MX Records#

4 records   39ms
PriorityTTLMail ServerIP addressesPTRASN
10 10800s mx1.mailpod16-cph3.g1i.one.com 5.249.232.33 mx1.mailpod16-cph3.g1i.one.com AS51468 One.com A/S
10 10800s mx2.mailpod16-cph3.g1i.one.com 5.249.232.34 mx2.mailpod16-cph3.g1i.one.com AS51468 One.com A/S
10 10800s mx3.mailpod16-cph3.g1i.one.com 5.249.232.35 mx3.mailpod16-cph3.g1i.one.com AS51468 One.com A/S
10 10800s mx4.mailpod16-cph3.g1i.one.com 5.249.232.36 mx4.mailpod16-cph3.g1i.one.com AS51468 One.com A/S

🔷 AAAA Records (IPv6)#

1 records   240ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a02:2350:5:108:8058:3a6f:5732:c099 3600s — AS51468 One.com A/S 2a02:2350:0:0:0:0:0:0/32 🇩🇰 Denmark Copenhagen

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records   501ms
TXT Record
v=spf1 include:_custspf.one.com ~all

✉️ SPF#

PolicyRecord (teachcare.dk)
~all (soft fail) v=spf1 include:_custspf.one.com ~all

📨 DMARC#

PolicyRecord (_dmarc.teachcare.dk)
p=reject v=DMARC1; p=reject

📬 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 15:21:07
www46.30.215.235 2a02:2350:5:108:8058:3a6f:5732:c099 (AS51468) (address records, no CNAME)
www vs bare domainSame network
WildcardNo
Denial of existenceNSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

4 records   76ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx1.mailpod16-cph3.g1i.one.com DANE-EE · SPKI · SHA-256 2362DFAC1BB9F66402E0636BDEF478E5…
SMTP _25._tcp.mx2.mailpod16-cph3.g1i.one.com DANE-EE · SPKI · SHA-256 2362DFAC1BB9F66402E0636BDEF478E5…
SMTP _25._tcp.mx3.mailpod16-cph3.g1i.one.com DANE-EE · SPKI · SHA-256 2362DFAC1BB9F66402E0636BDEF478E5…
SMTP _25._tcp.mx4.mailpod16-cph3.g1i.one.com DANE-EE · SPKI · SHA-256 2362DFAC1BB9F66402E0636BDEF478E5…

🔐 DNSSEC#

66ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

0ms
FieldValue
Serial2026091001
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s

📋 Registration#

WHOIS fetched 2026-10-09 10:33:06
FieldValue
RegistrarONE.COM A/S
Registered2026-06-03
Expires2027-06-02 (220d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
220ms
A
37ms
MX
39ms
AAAA
240ms
TXT
501ms
CAA
47ms
HTTPS
48ms
TLSA
76ms
SOA
0ms
MTA-STS
47ms
DNSSEC
66ms
SRV
55ms
Total
1090ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-11 15:21:07 1732ms 2 NS 1 A 4 MX 🔒 Secure
2026-10-09 10:24:07 463ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-29 20:51:11 431ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-27 20:23:58 shown 1090ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-16 20:15:09 998ms 2 NS 1 A 4 MX 🔒 Secure
2026-08-27 15:27:55 954ms 2 NS 1 A 4 MX 🔒 Secure
2026-08-12 10:03:26 1075ms 2 NS 1 A 4 MX 🔒 Secure
2026-08-09 13:45:51 997ms 2 NS 1 A 4 MX 🔒 Secure
2026-07-12 03:22:37 938ms 2 NS 1 A 4 MX 🔒 Secure
2026-06-24 22:22:38 771ms 2 NS 1 A 1 MX 🔒 Secure
2026-06-23 21:22:09 1171ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-20 18:19:43 1668ms 2 NS 1 A 1 MX 🔒 Secure
2026-06-17 21:49:59 544ms 2 NS 1 A 0 MX 🔒 Secure
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