frederiksberggymnasium.dk DNS records

🖥️ Nameservers2 records 48ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records1 records 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.63	600s	webforward.webpod12-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 48ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
5	3600s	frederiksberggymnasium-dk.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca04::c 2a01:111:f403:ca04::f 2a01:111:f403:ca09:: 52.101.68.25 52.101.68.27 52.101.68.29 52.101.73.28	mail-db4pr02cu00307.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-am7pr05cu00204.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 → 40.104.116.56
🔶 Autoconfig	46.30.213.63

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records2 records 94ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	0	100	443	mail.itcfyn.dk
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records5 records 224ms

TXT Record
9td7g52u1lm5usqinfpkc987km
f1nfov7oaf7r8u51an9oodtpg8
iqgnsl2mu0j8r9mm1k1nl6t42v
ksIV735TnrxavZ4ZzABD1HmdBQyU8cuqKvSJrSarzon4NZiNcZ0tpQrVpD8nZlaueaygXIJZN8mUjEza53f+6A==
v=spf1 a:itcpostfix02out.itcfyn.dk include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (frederiksberggymnasium.dk)
-all (hard fail)	v=spf1 a:itcpostfix02out.itcfyn.dk include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.frederiksberggymnasium.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email,mailto:dmarc@itcfyn.dk;

📬 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)

🔐 DNSSEC89ms

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

🏷️ SOA0ms

Field	Value
Serial	2026032502
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

48ms

A

51ms

MX

48ms

AAAA

38ms

TXT

224ms

CAA

57ms

HTTPS

64ms

TLSA

743ms

SOA

0ms

MTA-STS

69ms

DNSSEC

89ms

SRV

94ms

Total

1512ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-25 09:24:51	1512ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-27 10:57:27	1050ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 22:17:22	1200ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-19 23:03:23	1929ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 09:24:47	974ms	2 NS 1 A 1 MX	🔒 Secure	View