7u.dk

📜 Historical scan 2026-08-06 18:36:21 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

7u.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 88.99.95.15 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by mail.wsy.dk. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 146ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 115ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
88.99.95.15	300s	host22.onlinehost.dk	AS24940	Hetzner Online GmbH	88.99.0.0/16	🇩🇪 Germany	Falkenstein

📧 MX Records#

1 records 138ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.wsy.dk	—	—	—

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	farm1.onlinehost.dk → 88.99.95.15
🔶 Autoconfig	7u.dk → 88.99.95.15

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 315ms

TXT Record
v=spf1 include:wsy.dk -all

✉️ SPF#

Policy	Record (7u.dk)
-all (hard fail)	v=spf1 include:wsy.dk -all

📨 DMARC#

Policy	Record (_dmarc.7u.dk)
p=none (monitor only)	v=DMARC1; p=none; pct=100; rua=mailto:dmarc.rua@wsy.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 2026-10-01 07:49:52

www CNAME	7u.dk (all on 7u.dk)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u3473767.wl018.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u3473767.wl018.sendgrid.net	RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 10/10 · policy: -all

warn 10 of the 10 allowed DNS lookups used: one more include can break SPF

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.7u.dk	7u.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

199ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026080402
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

146ms

115ms

138ms

AAAA

135ms

TXT

315ms

CAA

126ms

HTTPS

124ms

TLSA

255ms

SOA

0ms

MTA-STS

140ms

DNSSEC

199ms

SRV

196ms

Total

1269ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-28 07:13:10	523ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 05:13:43	713ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-14 14:10:05	1264ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-06 18:36:21 shown	1269ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-19 15:59:08	777ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 12:57:02	1349ms	2 NS 1 A 1 MX	🔒 Secure