frederiksen-scientific.dk DNS records

🖥️ Nameservers2 records 43ms

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 Records3 records 52ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.26.10.249	300s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
104.26.11.249	300s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
172.67.71.48	300s	—	AS13335	Cloudflare, Inc.	172.67.64.0/18	—	—

📧 MX Records1 records 50ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	frederiksenscientific-dk02i.mail.protection.outlook.com	2a01:111:f403:ca04::f 2a01:111:f403:ca09::20 2a01:111:f403:ca09::5 2a01:111:f403:ca09::9 52.101.68.10 52.101.68.3 52.101.73.22 52.101.73.4	mail-db7pr03cu00507.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-am0pr83cu00404.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	autodiscover.outlook.com → 40.104.116.8

🔷 AAAA Records (IPv6)3 records 60ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:20::681a:af9	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::681a:bf9	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::ac43:4730	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—

🔐 HTTPS Records1 records 55ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.26.10.249,104.26.11.249,172.67.71.48 ipv6hint=2606:4700:20::681a:af9,2606:4700:20::681a:bf9,2606:4700:20::ac43:4730

📝 TXT Records4 records 247ms

TXT Record
google-site-verification=kXIZ8yvvwpIXeyc5iu7LqhVitbJl_hOqI8x-noZz1sA
google-site-verification=Rnb5AoqUh3xPfOz4_A8SKsIsMlKjqPGUtjADjQ0LiIw
spf.npstoday.com
v=spf1 include:spf.mentor-it.dk include:spf.protection.outlook.com include:spf.eu.exclaimer.net include:servers.mcsv.net include:acemdns.com a:owa.frederiksen.eu ip4:167.89.108.1 ip4:167.89.108.13 ip4:167.89.92.35 ip4:176.62.207.99 include:spf.flowmailer.net -all

✉️ SPF

Policy	Record (frederiksen-scientific.dk)
-all (hard fail)	v=spf1 include:spf.mentor-it.dk include:spf.protection.outlook.com include:spf.eu.exclaimer.net include:servers.mcsv.net include:acemdns.com a:owa.frederiksen.eu ip4:167.89.108.1 ip4:167.89.108.13 ip4:167.89.92.35 ip4:176.62.207.99 include:spf.flowmailer.net -all

📨 DMARC

Policy	Record (_dmarc.frederiksen-scientific.dk)
p=reject	v=DMARC1; p=reject; sp=reject; adkim=r; aspf=r; rf=afrf; pct=100; ri=86400

📬 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)

🔐 DNSSEC77ms

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	2411915627
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

43ms

A

52ms

MX

50ms

AAAA

60ms

TXT

247ms

CAA

62ms

HTTPS

55ms

TLSA

900ms

SOA

0ms

MTA-STS

62ms

DNSSEC

77ms

SRV

92ms

Total

2442ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-12 21:53:16	2442ms	2 NS 3 A 1 MX	🔓 Insecure	View
2026-07-23 09:44:40	3024ms	2 NS 3 A 1 MX	🔓 Insecure	View
2026-06-22 23:15:29	10175ms	2 NS 3 A 1 MX	🔓 Insecure	View
2026-06-22 11:14:44	1187ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 09:42:00	787ms	2 NS 3 A 1 MX	🔓 Insecure	View