brunnerctf.dk DNS records

🖥️ Nameservers2 records 33ms

Nameserver	IP addresses	PTR	ASN / ISP
evan.ns.cloudflare.com	108.162.193.165 172.64.33.165 173.245.59.165 2606:4700:58::adf5:3ba5 2803:f800:50::6ca2:c1a5 2a06:98c1:50::ac40:21a5	evan.ns.cloudflare.com evan.ns.cloudflare.com evan.ns.cloudflare.com evan.ns.cloudflare.com evan.ns.cloudflare.com evan.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
selah.ns.cloudflare.com	108.162.194.21 162.159.38.21 172.64.34.21 2606:4700:50::a29f:2615 2803:f800:50::6ca2:c215 2a06:98c1:50::ac40:2215	selah.ns.cloudflare.com selah.ns.cloudflare.com selah.ns.cloudflare.com selah.ns.cloudflare.com selah.ns.cloudflare.com selah.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 50ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.62.198	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.138.194	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	172.67.138.194
🔶 Autoconfig	172.67.138.194

🔷 AAAA Records (IPv6)2 records 43ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:3ec6	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::ac43:8ac2	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 72ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.62.198,172.67.138.194 ech=AEX+DQBBugAgACAXUf+23YDboba4db+V6/wsezT/zYza/z19G+HggcsuXAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:3ec6,2606:4700:3033::ac43:8ac2

📝 TXT Records1 records 270ms

TXT Record
brevo-code:88a43421d3f4e141eeefca9089eea1f8

✉️ SPF

✗ No SPF record — mail spoofing not restricted

📨 DMARC

Policy	Record (_dmarc.brunnerctf.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:rua@dmarc.brevo.com

📬 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)

🔐 DNSSEC183ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA0ms

Field	Value
Serial	2412989445
Primary NS (MNAME)	evan.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

33ms

A

50ms

MX

56ms

AAAA

43ms

TXT

270ms

CAA

54ms

HTTPS

72ms

TLSA

69ms

SOA

0ms

MTA-STS

151ms

DNSSEC

183ms

SRV

121ms

Total

754ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 09:34:22	754ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-27 06:10:00	11191ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-24 03:40:49	856ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-18 22:36:30	2519ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-13 16:21:51	2532ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-10 20:24:50	3404ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-09 15:08:50	984ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-08 09:45:24	1771ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-30 13:57:19	16762ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-24 14:39:45	829ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-30 04:43:25	821ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-26 13:18:10	901ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-16 17:15:18	384ms	2 NS 2 A 0 MX	🔓 Insecure	View