a9f.dk

📜 Historical scan 2026-09-23 16:10:39 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

a9f.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 3 November 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 85.184.166.114 is hosted by AURA Fiber A/S (AS204274) in Denmark. Mail is handled by generated-by-one-com-for-mx-10.a9f.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 32ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 39ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
85.184.166.114	43200s	85.184.166.114.static.dhcp.aura-net.dk	AS204274	AURA Fiber A/S	85.184.128.0/18	🇩🇰 Denmark	Viby J

📧 MX Records#

1 records 32ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	43200s	generated-by-one-com-for-mx-10.a9f.dk	85.184.166.114	85.184.166.114.static.dhcp.aura-net.dk	AS204274 AURA Fiber A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	85.184.166.114
🔶 Autoconfig	85.184.166.114

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 158ms

TXT Record
v=spf1 a mx ip4:85.184.166.114 ip4:10.0.0.0/24 ip4:127.0.0.1 include:sendgrid.net -all include:_custspf.one.com ~all

✉️ SPF#

Policy	Record (a9f.dk)
-all (hard fail)	v=spf1 a mx ip4:85.184.166.114 ip4:10.0.0.0/24 ip4:127.0.0.1 include:sendgrid.net -all include:_custspf.one.com ~all

📨 DMARC#

Policy	Record (_dmarc.a9f.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc-reports@a9f.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 2026-10-13 02:44:57

www	85.184.166.114 (AS204274) (address records, no CNAME)
www vs bare domain	Same network a9f.dk: 85.184.166.114 (AS204274) www.a9f.dk: 85.184.166.114 (AS204274)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u8814935.wl186.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u8814935.wl186.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: 5/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

105ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026092001
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-10 08:29:33

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2007-11-03
Expires	2026-11-30 (44d)

📋 WHOIS#

⏱️ Lookup Timing#

32ms

39ms

32ms

AAAA

26ms

TXT

158ms

CAA

39ms

HTTPS

25ms

TLSA

82ms

SOA

0ms

MTA-STS

53ms

DNSSEC

105ms

SRV

54ms

Total

649ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 02:44:57	441ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-03 21:06:38	527ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 16:10:39 shown	649ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-07 09:07:57	4955ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 19:48:36	3597ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 12:52:38	1109ms	2 NS 1 A 1 MX	🔒 Secure