classroom.dk

📜 Historical scan 2026-06-23 06:33:50  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

classroom.dk is a .dk domain served by 2 nameservers (ns1.parkingcrew.net, ns2.parkingcrew.net). It was registered on 20 June 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.247.81.99 is hosted by Team Internet AG (AS206834) in Canada. The zone is not DNSSEC-signed, 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   94ms
NameserverIP addressesPTRASN / ISP
ns1.parkingcrew.net 13.248.158.159 a94f3aae71d6f0705.awsglobalaccelerator.com AS16509 Amazon.com, Inc.
ns2.parkingcrew.net 76.223.21.9 a94f3aae71d6f0705.awsglobalaccelerator.com AS16509 Amazon.com, Inc.

🌍 A Records#

1 records   91ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.247.81.99 3600s — AS206834 Team Internet AG 104.247.80.0/22 🇨🇦 Canada —

📧 MX Records#

📧
No MX records found

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscover104.247.81.99
🔶 Autoconfig104.247.81.99

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝
No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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#

1 records   80ms
FlagsTagValue
0 issue letsencrypt.org

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 21:31:44
www104.247.81.99 (AS206834) (address records, no CNAME)
www vs bare domainSame network
classroom.dk: 104.247.81.99 (AS206834)
www.classroom.dk: 104.247.81.99 (AS206834)
WildcardNo

🔗 TLSA / DANE#

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

🔐 DNSSEC#

109ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

92ms
FieldValue
Serial1781004750
Primary NS (MNAME)ns1.parkingcrew.net
Responsible (RNAME)hostmaster@classroom.dk
Refresh28800s
Retry7200s
Expire604800s
Minimum (neg-cache TTL)86400s

📋 Registration#

WHOIS fetched 2026-10-13 19:00:43
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2017-06-20
Expires2027-06-30 (254d)

🔗 Same registrant#

3 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
gribby.dkPunktum dk A/S (direct)
hi.dkPunktum dk A/S (direct)
teori.dkPunktum dk A/S (direct)
📋 WHOIS#

⏱️ Lookup Timing#

NS
94ms
A
91ms
MX
93ms
AAAA
94ms
TXT
602ms
CAA
80ms
HTTPS
93ms
TLSA
2901ms
SOA
92ms
MTA-STS
62ms
DNSSEC
109ms
SRV
122ms
Total
3731ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-09-29 16:18:53 1474ms 2 NS 1 A 0 MX 🔓 Insecure
2026-08-28 16:47:16 1589ms 2 NS 1 A 0 MX 🔓 Insecure
2026-08-26 15:44:29 1627ms 2 NS 1 A 0 MX 🔓 Insecure
2026-08-24 17:51:50 1601ms 2 NS 1 A 0 MX 🔓 Insecure
2026-08-17 19:56:25 10395ms 2 NS 1 A 0 MX 🔓 Insecure
2026-08-06 04:31:59 2048ms 2 NS 1 A 0 MX 🔓 Insecure
2026-08-03 15:40:28 977ms 2 NS 1 A 0 MX 🔓 Insecure
2026-06-23 06:33:50 shown 3731ms 2 NS 1 A 0 MX 🔓 Insecure
2026-06-20 17:12:07 1930ms 2 NS 1 A 1 MX 🔓 Insecure
2026-06-16 21:05:25 2476ms 2 NS 1 A 0 MX 🔓 Insecure
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