duplex.dk DNS records

🖥️ Nameservers2 records 56ms

Nameserver	IP addresses	PTR	ASN / ISP
elaine.ns.cloudflare.com	108.162.192.152 172.64.32.152 173.245.58.152 2606:4700:50::adf5:3a98 2803:f800:50::6ca2:c098 2a06:98c1:50::ac40:2098	elaine.ns.cloudflare.com elaine.ns.cloudflare.com elaine.ns.cloudflare.com elaine.ns.cloudflare.com elaine.ns.cloudflare.com elaine.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
nico.ns.cloudflare.com	108.162.195.147 162.159.44.147 172.64.35.147 2606:4700:58::a29f:2c93 2803:f800:50::6ca2:c393 2a06:98c1:50::ac40:2393	nico.ns.cloudflare.com nico.ns.cloudflare.com nico.ns.cloudflare.com nico.ns.cloudflare.com nico.ns.cloudflare.com nico.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 46ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.89.86	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.157.97	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	104.21.89.86
🔶 Autoconfig	104.21.89.86

🔷 AAAA Records (IPv6)2 records 47ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3036::ac43:9d61	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:5956	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 52ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.89.86,172.67.157.97 ech=AEX+DQBBTQAgACCLqSp8XcSK8m9K+4dQe/lAdP95NuRj0VshDXZzORowQQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3036::ac43:9d61,2606:4700:3037::6815:5956

📝 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)

🔐 DNSSEC2073ms

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

🏷️ SOA0ms

Field	Value
Serial	2411030301
Primary NS (MNAME)	elaine.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

56ms

A

46ms

MX

55ms

AAAA

47ms

TXT

234ms

CAA

49ms

HTTPS

52ms

TLSA

59ms

SOA

0ms

MTA-STS

81ms

DNSSEC

2073ms

SRV

80ms

Total

2868ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-17 04:00:46	1880ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-08-14 02:20:04	1471ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-08-07 16:19:54	2868ms	2 NS 2 A 0 MX	🔒 Secure	View
2026-07-21 06:39:09	1618ms	2 NS 1 A 0 MX	🔒 Secure	View
2026-06-28 16:11:39	712ms	3 NS 1 A 0 MX	🔓 Insecure	View
2026-06-19 07:40:00	682ms	3 NS 1 A 0 MX	🔓 Insecure	View
2026-06-17 05:17:29	1170ms	3 NS 1 A 0 MX	🔓 Insecure	View
2026-06-17 05:10:29	8886ms	3 NS 1 A 0 MX	🔓 Insecure	View
2026-06-17 05:02:39	455ms	3 NS 1 A 0 MX	🔓 Insecure	View
2026-06-17 05:00:24	672ms	3 NS 1 A 0 MX	🔓 Insecure	View