schoollab.dk

Records from scan: 2026-10-20 19:10:14  ·  2532ms total
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

schoollab.dk is a .dk domain served by 2 nameservers (arya.ns.cloudflare.com, logan.ns.cloudflare.com). It was registered on 23 April 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.11.145 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.simply.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records   107ms
NameserverIP addressesPTRASN / 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 Records#

2 records   106ms
IPTTLPTRASNISP / OrgCIDRCountryCity
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 Records#

1 records   84ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mx.simply.com 94.231.103.108
94.231.106.20		 mx.simply.com
mx.simply.com		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscover104.21.11.145
🔶 Autoconfigmaildiscover.simply.com → 94.231.108.222

🔷 AAAA Records (IPv6)#

2 records   118ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
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 Records#

1 records   99ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.11.145,172.67.149.121 ech=AEX+DQBBbwAgACC48Wxzx6eY6P5UeTF57xCgA6ZBgPrJLn7m+z5MSicrWAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:9579,2606:4700:3037::6815:b91

🔌 SRV Records#

1 records   148ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 10 10 443 maildiscover.simply.com

📝 TXT Records#

3 records   241ms
TXT Record
detectify-verification=0d4619ea4d27973440b2f39b24df3c10
google-site-verification=SkQaEVVq0g0dKAPGS5_rAL4PgFSMUXc8KXpEmQ_HR4g
v=spf1 include:_spf.mailersend.net include:spf.simply.com -all

✉️ SPF#

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

📨 DMARC#

PolicyRecord (_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

🧩 Web & zone#

checked 2026-10-20 19:10:14
www104.21.11.145 172.67.149.121 2606:4700:3030::ac43:9579 2606:4700:3037::6815:b91 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardYes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

1 records   1038ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 4B949F05A63FED95FC94B3A83DD70167…

🔐 DNSSEC#

199ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

23ms
FieldValue
Serial2416613593
Primary NS (MNAME)arya.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-19 14:53:29
FieldValue
RegistrarSimply.com A/S
Registered2021-04-23
Expires2027-04-30 (190d)

🔗 Same registrant#

4 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

DomainRegistrar
ajejlogin.dkPunktum dk A/S (direct)
lobsterlab.dkSimply.com A/S
pmz.dkSimply.com A/S
pmzlogin.dkSimply.com A/S
📋 WHOIS#

⏱️ Lookup Timing#

NS
107ms
A
106ms
MX
84ms
AAAA
118ms
TXT
241ms
CAA
123ms
HTTPS
99ms
TLSA
1038ms
SOA
23ms
MTA-STS
102ms
DNSSEC
199ms
SRV
148ms
Total
2532ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-20 19:10:14 shown 2532ms 2 NS 2 A 1 MX 🔓 Insecure
2026-10-19 14:41:37 495ms 2 NS 2 A 1 MX 🔓 Insecure
2026-10-05 03:18:26 507ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-24 01:11:11 636ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-23 00:17:13 1899ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-13 22:10:58 1794ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-21 03:09:00 1193ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-04 21:12:23 986ms 2 NS 2 A 1 MX 🔓 Insecure
2026-07-17 11:30:10 935ms 2 NS 2 A 1 MX 🔓 Insecure
2026-07-03 01:22:20 1192ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-22 15:32:46 3101ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-18 16:59:17 906ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-18 01:50:16 708ms 2 NS 2 A 1 MX 🔓 Insecure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone