on-skole.dk

📜 Historical scan 2026-06-18 01:28:46 · ← 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 30ms

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 50ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
3.174.18.100	—	server-3-174-18-100.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	3.128.0.0/10	🇺🇸 United States	—
3.174.18.108	—	server-3-174-18-108.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	3.128.0.0/10	🇺🇸 United States	—
3.174.18.121	—	server-3-174-18-121.cph50.r.cloudfront.net	AS16509	Amazon.com, Inc.	3.128.0.0/10	🇺🇸 United States	—
3.174.18.51	—	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 78ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2600:9000:28e5:3800:17:6eef:c1c0:93a1	—	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—
2600:9000:28e5:3e00:17:6eef:c1c0:93a1	—	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—
2600:9000:28e5:5e00:17:6eef:c1c0:93a1	—	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—
2600:9000:28e5:6000:17:6eef:c1c0:93a1	—	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—
2600:9000:28e5:7e00:17:6eef:c1c0:93a1	—	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—
2600:9000:28e5:800:17:6eef:c1c0:93a1	—	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—
2600:9000:28e5:8600:17:6eef:c1c0:93a1	—	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—
2600:9000:28e5:f800:17:6eef:c1c0:93a1	—	—	AS16509	Amazon.com, Inc.	2600:9000:0:0:0:0:0:0/34	🇺🇸 United States	—

🔐 HTTPS Records#

1 records 78ms

Priority	Target	SvcParams
1 service	.	alpn="h2"

📝 TXT Records#

3 records 183ms

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#

110ms

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

🏷️ SOA#

29ms

Field	Value
Serial	2406094067
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 (300d)

🔗 Same registrant#

36 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)

📋 WHOIS#

⏱️ Lookup Timing#

30ms

50ms

52ms

AAAA

78ms

TXT

183ms

CAA

31ms

HTTPS

78ms

TLSA

527ms

SOA

29ms

MTA-STS

26ms

DNSSEC

110ms

SRV

141ms

Total

1319ms

🕐 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	2128ms	2 NS 4 A 0 MX	🔒 Secure
2026-06-18 01:28:46 shown	1319ms	2 NS 4 A 0 MX	🔒 Secure