schoolyard.dk
Last scanned: 2026-08-10 16:28:23  ·  900ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   51ms
NameserverIP addressesPTRASN / ISP
dns1.vismadns.com 162.159.0.247
2400:cb00:2049:1::a29f:f7		 —
—		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
dns2.vismadns.com 162.159.1.230
2400:cb00:2049:1::a29f:1e6		 —
—		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
dns3.vismadns.com 162.159.9.161
2400:cb00:2049:1::a29f:9a1		 —
—		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
dns4.vismadns.com 162.159.10.238
2400:cb00:2049:1::a29f:aee		 —
—		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
🌍 A Records1 records   54ms
IPTTLPTRASNISP / OrgCIDRCountryCity
91.123.58.136 3600s — — — — 🇳🇴 Norway —
📧 MX Records
📧
No MX records found
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverschoolyard.dk → 91.123.58.136
🔶 Autoconfigschoolyard.dk → 91.123.58.136
🔷 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
✗ No CAA records — any CA may issue certificates
🔏 ACME Challenge
TypeNameValue
CNAME _acme-challenge.schoolyard.dk schoolyard.dk
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC87ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2411743780
Primary NS (MNAME)dns1.vismadns.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
51ms
A
54ms
MX
50ms
AAAA
37ms
TXT
195ms
CAA
49ms
HTTPS
73ms
TLSA
58ms
SOA
0ms
MTA-STS
64ms
DNSSEC
87ms
SRV
72ms
Total
900ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-10 16:28:23 900ms 4 NS 1 A 0 MX 🔒 Secure View
2026-07-18 01:42:52 821ms 4 NS 1 A 0 MX 🔒 Secure View
2026-06-27 03:48:14 1516ms 4 NS 1 A 0 MX 🔒 Secure View
2026-06-24 16:58:20 668ms 4 NS 1 A 0 MX 🔒 Secure View
2026-06-18 04:46:48 742ms 4 NS 1 A 0 MX 🔒 Secure View
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