dup.dk DNS records

🖥️ Nameservers2 records 96ms

Nameserver	IP addresses	PTR	ASN / ISP
maisie.ns.cloudflare.com	108.162.194.89 162.159.38.89 172.64.34.89 2606:4700:50::a29f:2659 2803:f800:50::6ca2:c259 2a06:98c1:50::ac40:2259	maisie.ns.cloudflare.com maisie.ns.cloudflare.com maisie.ns.cloudflare.com maisie.ns.cloudflare.com maisie.ns.cloudflare.com maisie.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
tadeo.ns.cloudflare.com	108.162.195.197 162.159.44.197 172.64.35.197 2606:4700:58::a29f:2cc5 2803:f800:50::6ca2:c3c5 2a06:98c1:50::ac40:23c5	tadeo.ns.cloudflare.com tadeo.ns.cloudflare.com tadeo.ns.cloudflare.com tadeo.ns.cloudflare.com tadeo.ns.cloudflare.com tadeo.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 83ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.2.192	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.129.148	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records5 records 83ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	142.251.127.27 2a00:1450:4001:c21::1b	lcfrai-in-f27.1e100.net lcfrai-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	142.250.147.26 2a00:1450:4025:c01::1a	rd-in-f26.1e100.net rd-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	172.253.152.27 2a00:1450:4010:c22::1a	yulpptr-in-f27.1e100.net yulpptr-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	192.178.211.27 2404:6800:4000:1025::1a	lcbomp-in-f27.1e100.net lcbomp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	213.32.244.49
🔶 Autoconfig	213.32.244.49

🔷 AAAA Records (IPv6)2 records 73ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::ac43:8194	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:2c0	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 105ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.2.192,172.67.129.148 ech=AEX+DQBBvAAgACDbcRsueUOUzqLL6O4KsNVVhOdqEDJ1qmUwE57t8WDkaQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:8194,2606:4700:3035::6815:2c0

📝 TXT Records2 records 367ms

TXT Record
google-site-verification=RUda63CFhSckxpvApoLHPz3_6rKfdNmINUQRotvdrOw
v=spf1 include:_spf.google.com -all

✉️ SPF

Policy	Record (dup.dk)
-all (hard fail)	v=spf1 include:_spf.google.com -all

📨 DMARC

Policy	Record (_dmarc.dup.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:ec8550e2077b4e03b4cd2255911b2fbd@dmarc-reports.cloudflare.net; rf=afrf; pct=100;

📬 MTA-STS

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records11 records 143ms

Flags	Tag	Value
0	iodef	mailto:henrik@gpsleg.dk
0	issue	comodoca.com
0	issue	digicert.com; cansignhttpexchanges=yes
0	issue	letsencrypt.org
0	issue	pki.goog; cansignhttpexchanges=yes
0	issue	ssl.com
0	issuewild	comodoca.com
0	issuewild	digicert.com; cansignhttpexchanges=yes
0	issuewild	letsencrypt.org
0	issuewild	pki.goog; cansignhttpexchanges=yes
0	issuewild	ssl.com

🔗 TLSA / DANE

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

🔐 DNSSEC269ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA0ms

Field	Value
Serial	2413567615
Primary NS (MNAME)	maisie.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

96ms

A

83ms

MX

83ms

AAAA

73ms

TXT

367ms

CAA

143ms

HTTPS

105ms

TLSA

290ms

SOA

0ms

MTA-STS

169ms

DNSSEC

269ms

SRV

172ms

Total

3549ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 01:55:56	3549ms	2 NS 2 A 5 MX	🔒 Secure	View
2026-08-22 18:11:59	17747ms	2 NS 2 A 5 MX	🔒 Secure	View
2026-08-11 06:29:53	3896ms	2 NS 2 A 5 MX	🔒 Secure	View
2026-08-07 07:57:05	1622ms	2 NS 2 A 5 MX	🔒 Secure	View
2026-08-02 04:38:35	1723ms	2 NS 2 A 5 MX	🔒 Secure	View
2026-07-05 18:52:56	2341ms	2 NS 2 A 5 MX	🔒 Secure	View
2026-06-19 13:11:49	14200ms	2 NS 2 A 5 MX	🔒 Secure	View
2026-06-17 05:15:51	18436ms	2 NS 2 A 5 MX	🔒 Secure	View
2026-06-17 05:07:15	3208ms	2 NS 2 A 5 MX	⚠️ Bogus	View
2026-06-17 05:04:21	937ms	2 NS 2 A 5 MX	🔒 Secure	View
2026-06-17 05:01:03	1565ms	2 NS 2 A 5 MX	🔒 Secure	View