on-skole.dk

📜 Historical scan 2026-06-25 12:22:18 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

on-skole.dk is a .dk domain served by 2 nameservers (betty.ns.cloudflare.com, simon.ns.cloudflare.com). It was registered on 19 August 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 3.174.18.100 is hosted by Amazon.com, Inc. (AS16509) in United States. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 136ms

Nameserver	IP addresses	PTR	ASN / ISP
betty.ns.cloudflare.com	108.162.192.75 172.64.32.75 173.245.58.75 2606:4700:50::adf5:3a4b 2803:f800:50::6ca2:c04b 2a06:98c1:50::ac40:204b	betty.ns.cloudflare.com betty.ns.cloudflare.com betty.ns.cloudflare.com betty.ns.cloudflare.com betty.ns.cloudflare.com betty.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
simon.ns.cloudflare.com	108.162.193.232 172.64.33.232 173.245.59.232 2606:4700:58::adf5:3be8 2803:f800:50::6ca2:c1e8 2a06:98c1:50::ac40:21e8	simon.ns.cloudflare.com simon.ns.cloudflare.com simon.ns.cloudflare.com simon.ns.cloudflare.com simon.ns.cloudflare.com simon.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

4 records 114ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
3.174.18.100	300s	server-3-174-18-100.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	3.128.0.0/10	🇺🇸 United States	—
3.174.18.108	300s	server-3-174-18-108.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	3.128.0.0/10	🇺🇸 United States	—
3.174.18.121	300s	server-3-174-18-121.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	3.128.0.0/10	🇺🇸 United States	—
3.174.18.51	300s	server-3-174-18-51.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	3.128.0.0/10	🇺🇸 United States	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

8 records 89ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2600:9000:28e5:2200:17:6eef:c1c0:93a1	300s	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—
2600:9000:28e5:2a00:17:6eef:c1c0:93a1	300s	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—
2600:9000:28e5:5400:17:6eef:c1c0:93a1	300s	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—
2600:9000:28e5:5a00:17:6eef:c1c0:93a1	300s	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—
2600:9000:28e5:b400:17:6eef:c1c0:93a1	300s	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—
2600:9000:28e5:d400:17:6eef:c1c0:93a1	300s	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—
2600:9000:28e5:f400:17:6eef:c1c0:93a1	300s	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—
2600:9000:28e5:f800:17:6eef:c1c0:93a1	300s	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—

🔐 HTTPS Records#

1 records 123ms

Priority	Target	SvcParams
1 service	.	alpn="h2"

📝 TXT Records#

3 records 387ms

TXT Record
bw=pHMZ0o9K26XEqh8wCkEIQP53zkxdqb4gDGRALEcMstUI
have-i-been-pwned-verification=dweb_sde750ds96ttiuz9nxzmqg8x
v=spf1 -all

✉️ SPF#

Policy	Record (on-skole.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.on-skole.dk)
p=reject	v=DMARC1; p=reject; sp=reject; rua=mailto:dmarcreports-rua@redbarnet.dk; ruf=mailto:dmarcreports-ruf@redbarnet.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-20 09:17:26

www	104.21.96.136 172.67.181.161 2606:4700:3031::6815:6088 2606:4700:3035::ac43:b5a1 (AS13335) (address records, no CNAME)
www vs bare domain	Same network on-skole.dk: 104.21.96.136 172.67.181.161 2606:4700:3031::6815:6088 2606:4700:3035::ac43:b5a1 (AS13335) www.on-skole.dk: 104.21.96.136 172.67.181.161 2606:4700:3031::6815:6088 2606:4700:3035::ac43:b5a1 (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

185ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2407862648
Primary NS (MNAME)	betty.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-19 08:41:53

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2024-08-19
Expires	2027-08-18 (298d)

🔗 Same registrant#

37 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).

Domain	Registrar
anmelddet.dk	Punktum dk A/S (direct)
boernebeskyttelse.dk	Punktum dk A/S (direct)
comedyaid.dk	Punktum dk A/S (direct)
grintilgavn.dk	Punktum dk A/S (direct)
ikkeforalle.dk	Punktum dk A/S (direct)
leglaer.dk	Punktum dk A/S (direct)
leglær.dk	Punktum dk A/S (direct)
on-digitalefrontløbere.dk	Punktum dk A/S (direct)
on-digitalfrontløber.dk	Punktum dk A/S (direct)
on-familie.dk	Punktum dk A/S (direct)
on-fritid.dk	Punktum dk A/S (direct)
on-grænser.dk	Punktum dk A/S (direct)
on-hjem.dk	Punktum dk A/S (direct)
on-line.dk	Punktum dk A/S (direct)
on-off.dk	Punktum dk A/S (direct)
on-sammen.dk	Punktum dk A/S (direct)
on-ssp.dk	Punktum dk A/S (direct)
on-team.dk	Punktum dk A/S (direct)
on-undervisning.dk	Punktum dk A/S (direct)
on-ungdom.dk	Punktum dk A/S (direct)
on-ungedialog.dk	Punktum dk A/S (direct)
on-ungeformidling.dk	Punktum dk A/S (direct)
on-ungtilung.dk	Punktum dk A/S (direct)
on-ungtilyngre.dk	Punktum dk A/S (direct)
rb2.dk	Punktum dk A/S (direct)
redbarnet-frivillignet.dk	Punktum dk A/S (direct)
redbarnet.dk	Punktum dk A/S (direct)
reloadme.dk	Punktum dk A/S (direct)
savethechildren.dk	Punktum dk A/S (direct)
sikkerchat.dk	Punktum dk A/S (direct)
sikkerlejr.dk	Punktum dk A/S (direct)
sletdet.dk	Punktum dk A/S (direct)
somedigmig.dk	Punktum dk A/S (direct)
somemorfar.dk	Punktum dk A/S (direct)
stopdigitaleovergreb.dk	Punktum dk A/S (direct)
taggodtimod.dk	Punktum dk A/S (direct)
venskabsløbet.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

136ms

114ms

148ms

AAAA

89ms

TXT

387ms

CAA

134ms

HTTPS

123ms

TLSA

730ms

SOA

0ms

MTA-STS

115ms

DNSSEC

185ms

SRV

129ms

Total

2128ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-20 09:17:26	2407ms	2 NS 2 A 0 MX	🔒 Secure
2026-10-19 08:26:14	1246ms	2 NS 2 A 0 MX	🔒 Secure
2026-10-03 13:04:12	638ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-30 12:56:12	661ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-25 00:35:56	682ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-04 12:35:13	586ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-26 14:38:00	942ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-22 16:54:36	1027ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-08 03:37:30	1055ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-06 13:49:00	1003ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-14 20:29:57	1025ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-27 09:35:08	863ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-25 12:22:18 shown	2128ms	2 NS 4 A 0 MX	🔒 Secure
2026-06-18 01:28:46	1319ms	2 NS 4 A 0 MX	🔒 Secure