ctf-chal.dk
Last scanned: 2026-08-25 01:11:56  ·  1420ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   56ms
NameserverIP addressesPTRASN / ISP
brenda.ns.cloudflare.com 108.162.192.77
172.64.32.77
173.245.58.77
2606:4700:50::adf5:3a4d
2803:f800:50::6ca2:c04d
2a06:98c1:50::ac40:204d		 brenda.ns.cloudflare.com
brenda.ns.cloudflare.com
brenda.ns.cloudflare.com
brenda.ns.cloudflare.com
brenda.ns.cloudflare.com
brenda.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
randy.ns.cloudflare.com 108.162.195.109
162.159.44.109
172.64.35.109
2606:4700:58::a29f:2c6d
2803:f800:50::6ca2:c36d
2a06:98c1:50::ac40:236d		 randy.ns.cloudflare.com
randy.ns.cloudflare.com
randy.ns.cloudflare.com
randy.ns.cloudflare.com
randy.ns.cloudflare.com
randy.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
🌍 A Records
🌍
No A records found
📧 MX Records
📧
No MX records found
🔷 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
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC90ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsresolution failed: ncache nxrrset
🏷️ SOA0ms
FieldValue
Serial2411843304
Primary NS (MNAME)brenda.ns.cloudflare.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
56ms
A
52ms
MX
50ms
AAAA
42ms
TXT
200ms
CAA
60ms
HTTPS
45ms
TLSA
47ms
SOA
0ms
MTA-STS
69ms
DNSSEC
90ms
SRV
463ms
Total
1420ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-25 01:11:56 1420ms 2 NS 0 A 0 MX 🔒 Secure View
2026-08-10 15:44:44 2971ms 2 NS 0 A 0 MX 🔒 Secure View
2026-07-23 08:17:51 1500ms 2 NS 0 A 0 MX 🔒 Secure View
2026-07-15 08:47:08 937ms 2 NS 0 A 0 MX 🔒 Secure View
2026-06-28 21:20:47 727ms 2 NS 0 A 0 MX 🔒 Secure View
2026-06-22 15:44:02 2101ms 2 NS 0 A 0 MX 🔒 Secure View
2026-06-20 00:34:19 462ms 2 NS 0 A 0 MX 🔒 Secure View
2026-06-16 23:10:13 399ms 2 NS 0 A 0 MX 🔒 Secure View
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