c-y.dk

📜 Historical scan 2026-06-19 16:11:07 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

c-y.dk is a .dk domain served by 3 nameservers (ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com). It was registered on 22 May 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 78.46.76.143 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, has no 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#

3 records 95ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.first-ns.de	213.239.242.238 2a01:4f8:0:a101::a:1	ns1.first-ns.de ns1.first-ns.de	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH
robotns2.second-ns.de	213.133.100.103 2a01:4f8:0:1::5ddc:2	robotns2.second-ns.de robotns2.second-ns.de	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH
robotns3.second-ns.com	193.47.99.3 2001:67c:192c::add:a3	robotns3.second-ns.com robotns3.second-ns.com	AS12337 noris network AG AS12337 noris network AG

🌍 A Records#

1 records 94ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
78.46.76.143	43200s	jupiter2.dccc.de	AS24940	Hetzner Online GmbH	78.46.0.0/15	🇩🇪 Germany	Falkenstein

📧 MX Records#

5 records 89ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	43200s	aspmx.l.google.com	172.253.152.27 2a00:1450:4010:c02::1b 2a00:1450:4010:c02::1b	yulpptr-in-f27.1e100.net le-in-f27.1e100.net le-in-x1b.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	43200s	alt1.aspmx.l.google.com	192.178.211.26 2404:6800:4000:1025::1a	lcbomp-in-f26.1e100.net lcbomp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	43200s	alt2.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1a	tp-in-f27.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	43200s	aspmx2.googlemail.com	172.253.158.26 2404:6800:4003:c26::1a	so-in-f26.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	43200s	aspmx3.googlemail.com	108.177.125.26 2404:6800:4008:c01::1b	tp-in-f26.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	78.46.76.143
🔶 Autoconfig	78.46.76.143

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 483ms

TXT Record
google-site-verification=rbyGmMg7JyY7HrJigP1EC2q7qX-SkoKYmrc20kME85U
v=spf1 +a +mx +ip4:78.46.76.143 +ip4:78.46.76.143/46847 +include:schoolapi.xyw.dk include:spf.eu.exclaimer.net ?all

✉️ SPF#

Policy	Record (c-y.dk)
?all (neutral)	v=spf1 +a +mx +ip4:78.46.76.143 +ip4:78.46.76.143/46847 +include:schoolapi.xyw.dk include:spf.eu.exclaimer.net ?all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-08 06:05:59

www	78.46.76.143 (AS24940) (address records, no CNAME)
www vs bare domain	Same network c-y.dk: 78.46.76.143 (AS24940) www.c-y.dk: 78.46.76.143 (AS24940)
Wildcard	Yes: any name under the zone resolves

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	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: 4/10 · policy: ?all

error include:schoolapi.xyw.dk has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)
warn "?all" is neutral: it gives receivers no guidance, much like having no SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

182ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

94ms

Field	Value
Serial	2026041400
Primary NS (MNAME)	ns1.first-ns.de
Responsible (RNAME)	dns@hetzner.com
Refresh	14400s
Retry	1800s
Expire	604800s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-10 01:36:56

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2012-05-22
Expires	2027-05-31 (226d)

📋 WHOIS#

⏱️ Lookup Timing#

95ms

94ms

89ms

AAAA

89ms

TXT

483ms

CAA

101ms

HTTPS

88ms

TLSA

2100ms

SOA

94ms

MTA-STS

116ms

DNSSEC

182ms

SRV

211ms

Total

3624ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-16 12:24:26	975ms	3 NS 1 A 5 MX	🔓 Insecure
2026-08-27 13:55:43	1019ms	3 NS 1 A 5 MX	🔓 Insecure
2026-08-25 09:11:58	1193ms	3 NS 1 A 5 MX	🔓 Insecure
2026-06-23 20:12:08	1021ms	3 NS 1 A 5 MX	🔓 Insecure
2026-06-19 16:11:07 shown	3624ms	3 NS 1 A 5 MX	🔓 Insecure
2026-06-16 18:49:27	1267ms	3 NS 1 A 5 MX	🔓 Insecure
2026-06-16 18:40:27	727ms	3 NS 1 A 5 MX	🔓 Insecure