schoollab.dk DNS records

🖥️ Nameservers2 records 46ms

Nameserver	IP addresses	PTR	ASN / ISP
arya.ns.cloudflare.com	108.162.192.70 172.64.32.70 173.245.58.70 2606:4700:50::adf5:3a46 2803:f800:50::6ca2:c046 2a06:98c1:50::ac40:2046	arya.ns.cloudflare.com arya.ns.cloudflare.com arya.ns.cloudflare.com arya.ns.cloudflare.com arya.ns.cloudflare.com arya.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
logan.ns.cloudflare.com	108.162.193.198 172.64.33.198 173.245.59.198 2606:4700:58::adf5:3bc6 2803:f800:50::6ca2:c1c6 2a06:98c1:50::ac40:21c6	logan.ns.cloudflare.com logan.ns.cloudflare.com logan.ns.cloudflare.com logan.ns.cloudflare.com logan.ns.cloudflare.com logan.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 45ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.11.145	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.149.121	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx.simply.com	94.231.106.20	mx.simply.com	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	172.67.149.121
🔶 Autoconfig	maildiscover.simply.com → 94.231.108.222

🔷 AAAA Records (IPv6)2 records 42ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:9579	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:b91	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=104.21.11.145,172.67.149.121 ech=AEX+DQBBdwAgACCeW7lte/SLNjfzkNODErevL2vKCODFU3o6T0npYL37YwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:9579,2606:4700:3037::6815:b91

🔌 SRV Records1 records 237ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com

📝 TXT Records3 records 197ms

TXT Record
detectify-verification=0d4619ea4d27973440b2f39b24df3c10
google-site-verification=SkQaEVVq0g0dKAPGS5_rAL4PgFSMUXc8KXpEmQ_HR4g
v=spf1 include:_spf.mailersend.net include:spf.simply.com -all

✉️ SPF

Policy	Record (schoollab.dk)
-all (hard fail)	v=spf1 include:_spf.mailersend.net include:spf.simply.com -all

📨 DMARC

Policy	Record (_dmarc.schoollab.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 Records

✗ No CAA records — any CA may issue certificates

🔗 TLSA / DANE2 records 76ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	97A3BA009F39C761BFFB6574340E8138…
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	A9D603AF4D7ED6B9246B4B68500CD6F2…

🔐 DNSSEC102ms

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	2412721508
Primary NS (MNAME)	arya.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

45ms

MX

41ms

AAAA

42ms

TXT

197ms

CAA

45ms

HTTPS

50ms

TLSA

76ms

SOA

0ms

MTA-STS

74ms

DNSSEC

102ms

SRV

237ms

Total

1193ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-21 03:09:00	1193ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-04 21:12:23	986ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-17 11:30:10	935ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-03 01:22:20	1192ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-22 15:32:46	3101ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-18 16:59:17	906ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-18 01:50:16	708ms	2 NS 2 A 1 MX	🔓 Insecure	View