under37.dk DNS records

🖥️ Nameservers2 records 48ms

Nameserver	IP addresses	PTR	ASN / ISP
etta.ns.cloudflare.com	108.162.192.156 172.64.32.156 173.245.58.156 2606:4700:50::adf5:3a9c 2803:f800:50::6ca2:c09c 2a06:98c1:50::ac40:209c	etta.ns.cloudflare.com etta.ns.cloudflare.com etta.ns.cloudflare.com etta.ns.cloudflare.com etta.ns.cloudflare.com etta.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
junade.ns.cloudflare.com	108.162.195.30 162.159.44.30 172.64.35.30 2606:4700:58::a29f:2c1e 2803:f800:50::6ca2:c31e 2a06:98c1:50::ac40:231e	junade.ns.cloudflare.com junade.ns.cloudflare.com junade.ns.cloudflare.com junade.ns.cloudflare.com junade.ns.cloudflare.com junade.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.31.3	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.174.65	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 53ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	under37-dk.mail.protection.outlook.com	2a01:111:f403:ca04::c 2a01:111:f403:ca09::4 2a01:111:f403:ca09::5 2a01:111:f403:ca09::d 52.101.73.12 52.101.73.24 52.101.73.6 52.101.73.8	mail-db9pr02cu00204.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-as8pr05cu00300.inbound.protection.outlook.com mail-am6pr04cu00306.inbound.protection.outlook.com mail-am0pr04cu00500.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	104.21.31.3

🔷 AAAA Records (IPv6)2 records 49ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:1f03	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:ae41	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 61ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.31.3,172.67.174.65 ech=AEX+DQBBZQAgACBit3vwIGtL/FQkasp4XprWB5P3uLBmloDh7ggN9oRyQwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:1f03,2606:4700:3035::ac43:ae41

📝 TXT Records2 records 184ms

TXT Record
MS=ms56609066
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (under37.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 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)

🔐 DNSSEC95ms

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	2411507274
Primary NS (MNAME)	etta.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

48ms

A

42ms

MX

53ms

AAAA

49ms

TXT

184ms

CAA

57ms

HTTPS

61ms

TLSA

884ms

SOA

0ms

MTA-STS

64ms

DNSSEC

95ms

SRV

68ms

Total

2202ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-07 12:42:15	2202ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-28 00:05:34	8917ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-25 23:06:40	5558ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-22 20:43:43	986ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-19 17:17:35	1404ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-15 02:21:52	8960ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-27 00:36:58	1538ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-26 17:36:40	668ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 15:51:42	3566ms	2 NS 1 A 1 MX	🔒 Secure	View