c-online.dk

📜 Historical scan 2026-06-16 18:48:21 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

c-online.dk is a .dk domain served by 3 nameservers (ns1.dns.services, ns2.dns.services, ns3.dns.services). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 167.86.70.99 is hosted by Contabo GmbH (AS51167) in Germany. Mail is handled by mail.c-online.dk. 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#

3 records 31ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dns.services	—	—	—
ns2.dns.services	—	—	—
ns3.dns.services	—	—	—

🌍 A Records#

1 records 27ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
167.86.70.99	—	annemarie.c-online.dk	AS51167	Contabo GmbH	167.86.68.0/22	🇩🇪 Germany	Nuremberg

📧 MX Records#

1 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	mail.c-online.dk	5.189.136.249	james.c-online.dk	AS51167 Contabo GmbH

🔷 AAAA Records (IPv6)#

1 records 102ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:c207:2038:4605::1	—	—	AS51167	Contabo GmbH	2a02:c204:0:0:0:0:0:0/30	🇫🇷 France	Lauterbourg

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 157ms

TXT Record
v=spf1 a mx ip4:5.189.136.249 ip6:2a02:c207:2006:9867::1 ip6:2a02:c207:2006:9867:0000:0000:0000:0001 -all

✉️ SPF#

Policy	Record (c-online.dk)
-all (hard fail)	v=spf1 a mx ip4:5.189.136.249 ip6:2a02:c207:2006:9867::1 ip6:2a02:c207:2006:9867:0000:0000:0000:0001 -all

📨 DMARC#

Policy	Record (_dmarc.c-online.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@c-online.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 2026-10-08 03:15:45

www CNAME	c-online.dk (all on c-online.dk) → 167.86.70.99 2a02:c207:2038:4605::1 (AS51167)
www vs bare domain	Same network c-online.dk: 167.86.70.99 2a02:c207:2038:4605::1 (AS51167) www.c-online.dk: 167.86.70.99 2a02:c207:2038:4605::1 (AS51167)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
dkim	—	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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

79ms

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

🏷️ SOA#

36ms

Field	Value
Serial	2023051625
Primary NS (MNAME)	ns1.dns.services
Responsible (RNAME)	post@dns.services
Refresh	10800s
Retry	3600s
Expire	1814400s
Minimum (neg-cache TTL)	7200s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

31ms

27ms

35ms

AAAA

102ms

TXT

157ms

CAA

100ms

HTTPS

100ms

TLSA

104ms

SOA

36ms

MTA-STS

44ms

DNSSEC

79ms

SRV

0ms

Total

473ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 23:10:07	1573ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-29 15:13:08	2028ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-27 00:37:49	2977ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-15 04:09:17	588ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-24 18:15:28	3050ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-02 00:42:42	818ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-16 18:48:21 shown	473ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-16 18:40:18	657ms	3 NS 1 A 1 MX	🔒 Secure