erhvervsdykkerskolen.dk DNS records

🖥️ Nameservers2 records 46ms

Nameserver	IP addresses	PTR	ASN / ISP
jacqueline.ns.cloudflare.com	108.162.194.132 162.159.38.132 172.64.34.132 2606:4700:50::a29f:2684 2803:f800:50::6ca2:c284 2a06:98c1:50::ac40:2284	jacqueline.ns.cloudflare.com jacqueline.ns.cloudflare.com jacqueline.ns.cloudflare.com jacqueline.ns.cloudflare.com jacqueline.ns.cloudflare.com jacqueline.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
phil.ns.cloudflare.com	108.162.193.137 172.64.33.137 173.245.59.137 2606:4700:58::adf5:3b89 2803:f800:50::6ca2:c189 2a06:98c1:50::ac40:2189	phil.ns.cloudflare.com phil.ns.cloudflare.com phil.ns.cloudflare.com phil.ns.cloudflare.com phil.ns.cloudflare.com phil.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 57ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.62.252	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.141.61	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 53ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	erhvervsdykkerskolen-dk.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca04::10 2a01:111:f403:ca04::5 2a01:111:f403:ca09::20 52.101.68.21 52.101.68.25 52.101.68.32 52.101.73.30	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-dbapr03cu00100.inbound.protection.outlook.com mail-db3pr0202cu00205.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-am7pr05cu00306.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 → 40.104.116.24
🔶 Autoconfig	104.21.62.252

🔷 AAAA Records (IPv6)2 records 51ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::ac43:8d3d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::6815:3efc	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 50ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.62.252,172.67.141.61 ech=AEX+DQBB0wAgACBZNDiKGHc5OdHa3u2YNN3ziF2YSJI85P+Dao5ATrg8AQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::ac43:8d3d,2606:4700:3036::6815:3efc

🔌 SRV Records1 records 89ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records1 records 229ms

TXT Record
v=spf1 +a +mx +ip4:209.124.66.7 ip4:23.83.208.0/20 include:spf.a2hosting.com include:spf.protection.outlook.com include:send.heyloyalty.com include:relay.mailchannels.net ~all

✉️ SPF

Policy	Record (erhvervsdykkerskolen.dk)
~all (soft fail)	v=spf1 +a +mx +ip4:209.124.66.7 ip4:23.83.208.0/20 include:spf.a2hosting.com include:spf.protection.outlook.com include:send.heyloyalty.com include:relay.mailchannels.net ~all

📨 DMARC

Policy	Record (_dmarc.erhvervsdykkerskolen.dk)
p=none (monitor only)	v=DMARC1;p=none;sp=none;adkim=r;aspf=r;pct=100;fo=0;rf=afrf;ri=86400;rua=mailto:kontakt@erhvervsdykkerskolen.dk;ruf=mailto:kontakt@erhvervsdykkerskolen.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

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.erhvervsdykkerskolen.dk	3PuDVS2oX5YX4mJX0QezvTLeBsNl4VM5eVJY0Nj_Rb8

🔗 TLSA / DANE

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC76ms

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

🏷️ SOA0ms

Field	Value
Serial	2411937962
Primary NS (MNAME)	jacqueline.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

46ms

A

57ms

MX

53ms

AAAA

51ms

TXT

229ms

CAA

55ms

HTTPS

50ms

TLSA

931ms

SOA

0ms

MTA-STS

86ms

DNSSEC

76ms

SRV

89ms

Total

2480ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-11 18:30:28	2480ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-04 14:29:43	2649ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-19 07:45:16	2372ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-26 17:27:21	1625ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-19 20:13:45	1300ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-17 08:05:20	1120ms	2 NS 2 A 1 MX	🔒 Secure	View