frederiksenscientific.dk DNS records

🖥️ Nameservers2 records 44ms

Nameserver	IP addresses	PTR	ASN / ISP
emerson.ns.cloudflare.com	108.162.195.96 162.159.44.96 172.64.35.96 2606:4700:58::a29f:2c60 2803:f800:50::6ca2:c360 2a06:98c1:50::ac40:2360	emerson.ns.cloudflare.com emerson.ns.cloudflare.com emerson.ns.cloudflare.com emerson.ns.cloudflare.com emerson.ns.cloudflare.com emerson.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
jean.ns.cloudflare.com	108.162.192.121 172.64.32.121 173.245.58.121 2606:4700:50::adf5:3a79 2803:f800:50::6ca2:c079 2a06:98c1:50::ac40:2079	jean.ns.cloudflare.com jean.ns.cloudflare.com jean.ns.cloudflare.com jean.ns.cloudflare.com jean.ns.cloudflare.com jean.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.13.96	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.132.201	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)2 records 8ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3036::6815:d60	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000::/42	—	—
2606:4700:3035::ac43:84c9	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000::/42	—	—

🔐 HTTPS Records1 records 22ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.13.96,172.67.132.201 ech=AEX+DQBBbQAgACB7/SBH+xqW4r7SI60BZcc14GXZERm9bXXLDs1CZjL2RwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::ac43:84c9,2606:4700:3036::6815:d60

📝 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)

🔐 DNSSEC102ms

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

🏷️ SOA8ms

Field	Value
Serial	2410150381
Primary NS (MNAME)	emerson.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

44ms

A

33ms

MX

7ms

AAAA

8ms

TXT

49ms

CAA

14ms

HTTPS

22ms

TLSA

31ms

SOA

8ms

MTA-STS

12ms

DNSSEC

102ms

SRV

0ms

Total

6816ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 15:54:00	6816ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-25 22:49:51	1357ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-22 21:10:36	1346ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-21 15:00:28	9902ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-28 20:50:24	6871ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-21 16:16:54	1006ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 11:23:30	1187ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-19 14:19:18	1066ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-17 10:34:16	1313ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-17 10:27:40	688ms	2 NS 2 A 0 MX	🔓 Insecure	View