flexnu.dk DNS records

🖥️ Nameservers2 records 85ms

Nameserver	IP addresses	PTR	ASN / ISP
byron.ns.cloudflare.com	—	—	—
ursula.ns.cloudflare.com	—	—	—

🌍 A Records1 records 63ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
76.76.21.21	—	—	AS16509	Amazon.com, Inc.	76.76.21.0/24	🇺🇸 United States	Walnut

📧 MX Records1 records 71ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	flexnu-dk.mail.protection.outlook.com	52.101.68.12 52.101.68.39 52.101.73.16 52.101.73.28	mail-db9pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-am7pr05cu00204.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 185ms

TXT Record
MS=ms43221920
v=spf1 include:spf.protection.outlook.com include:amazonses.com include:send.flexnu.dk ~all

✉️ SPF

Policy	Record (flexnu.dk)
~all (soft fail)	v=spf1 include:spf.protection.outlook.com include:amazonses.com include:send.flexnu.dk ~all

📨 DMARC

Policy	Record (_dmarc.flexnu.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 MTA-STS

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records11 records 59ms

Flags	Tag	Value
0	iodef	mailto:aa@keyton.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)

🔐 DNSSEC176ms

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

🏷️ SOA54ms

Field	Value
Serial	2407083794
Primary NS (MNAME)	byron.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

85ms

A

63ms

MX

71ms

AAAA

68ms

TXT

185ms

CAA

59ms

HTTPS

63ms

TLSA

108ms

SOA

54ms

MTA-STS

46ms

DNSSEC

176ms

SRV

0ms

Total

1070ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 07:33:54	1284ms	2 NS 3 A 1 MX	🔓 Insecure	View
2026-08-27 15:55:40	1166ms	2 NS 3 A 1 MX	🔓 Insecure	View
2026-08-26 14:36:00	1604ms	2 NS 3 A 1 MX	🔓 Insecure	View
2026-08-14 01:08:38	7627ms	2 NS 3 A 1 MX	🔓 Insecure	View
2026-08-07 13:03:23	3458ms	2 NS 3 A 1 MX	🔓 Insecure	View
2026-07-31 14:37:14	17417ms	2 NS 3 A 1 MX	🔓 Insecure	View
2026-07-18 10:31:17	9798ms	2 NS 3 A 1 MX	❓ Unknown	View
2026-07-13 22:19:09	10470ms	2 NS 3 A 1 MX	🔓 Insecure	View
2026-07-08 16:42:51	3712ms	2 NS 3 A 1 MX	🔓 Insecure	View
2026-07-06 13:33:20	7536ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-01 21:55:44	5390ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-27 11:25:26	1307ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-25 17:47:29	966ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-17 09:25:50	1070ms	2 NS 1 A 1 MX	🔓 Insecure	View