guckenheimer.dk DNS records

🖥️ Nameservers2 records 67ms

Nameserver	IP addresses	PTR	ASN / ISP
emily.ns.cloudflare.com	108.162.192.155 172.64.32.155 173.245.58.155 2606:4700:50::adf5:3a9b 2803:f800:50::6ca2:c09b 2a06:98c1:50::ac40:209b	emily.ns.cloudflare.com emily.ns.cloudflare.com emily.ns.cloudflare.com emily.ns.cloudflare.com emily.ns.cloudflare.com emily.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
langston.ns.cloudflare.com	108.162.195.252 162.159.44.252 172.64.35.252 2606:4700:58::a29f:2cfc 2803:f800:50::6ca2:c3fc 2a06:98c1:50::ac40:23fc	langston.ns.cloudflare.com langston.ns.cloudflare.com langston.ns.cloudflare.com langston.ns.cloudflare.com langston.ns.cloudflare.com langston.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 82ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.4.152	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.154.52	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records3 records 89ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx10.mailspamprotection.com	34.149.79.66	66.79.149.34.bc.googleusercontent.com	AS396982 Google LLC
20	300s	mx20.mailspamprotection.com	34.120.156.61	61.156.120.34.bc.googleusercontent.com	AS396982 Google LLC
30	300s	mx30.mailspamprotection.com	34.111.121.216	216.121.111.34.bc.googleusercontent.com	AS396982 Google LLC

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	172.67.154.52
🔶 Autoconfig	104.21.4.152

🔷 AAAA Records (IPv6)2 records 84ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::ac43:9a34	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:498	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 143ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.4.152,172.67.154.52 ech=AEX+DQBB3AAgACCjGdSZQoISHFcxnJdF7/qSWC/lNO8x8b69O3XMmzvvbgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:9a34,2606:4700:3037::6815:498

📝 TXT Records1 records 439ms

TXT Record
v=spf1 +a +mx +ip4:35.214.209.56 include:_spf.mailspamprotection.com ~all

✉️ SPF

Policy	Record (guckenheimer.dk)
~all (soft fail)	v=spf1 +a +mx +ip4:35.214.209.56 include:_spf.mailspamprotection.com ~all

📨 DMARC

Policy	Record (_dmarc.guckenheimer.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:615c1b540a3c443d8bdab50ee6d4b410@dmarc-reports.cloudflare.net

📬 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)

🔐 DNSSEC339ms

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	2413469351
Primary NS (MNAME)	emily.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

67ms

A

82ms

MX

89ms

AAAA

84ms

TXT

439ms

CAA

108ms

HTTPS

143ms

TLSA

413ms

SOA

0ms

MTA-STS

175ms

DNSSEC

339ms

SRV

193ms

Total

2564ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-29 23:10:09	2564ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-26 22:11:28	1493ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-20 23:58:06	25296ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-16 15:58:08	7247ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-03 13:07:31	3489ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-25 10:05:27	848ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-21 09:06:59	2969ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-19 09:29:29	1056ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-17 10:00:40	9162ms	2 NS 2 A 3 MX	🔓 Insecure	View