cfrost.dk DNS records

🖥️ Nameservers2 records 67ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.desec.io	2607:f740:e633:deec::2 45.54.76.1	ns1.desec.io ns1.desec.io	AS63911 NetActuate, Inc AS63911 NetActuate, Inc
ns2.desec.org	157.53.224.1 2607:f740:e00a:deec::2	ns2.desec.org ns2.desec.org	AS36217 NetActuate, Inc AS36217 NetActuate, Inc

🌍 A Records1 records 83ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
80.208.56.143	3600s	80.208.56.143.static.fibianet.dk	AS44869	FIBIA P/S	80.208.0.0/17	🇩🇰 Denmark	Silkeborg

📧 MX Records2 records 116ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx1.improvmx.com	13.37.195.136 15.236.236.160 2a05:d012:412:e201:88aa:e7b9:7a43:12d7 2a05:d012:412:e202:f36:2c1f:1a49:d38a 2a05:d012:412:e203:373a:f51a:4a85:1d25 35.181.18.45	ec2-13-37-195-136.eu-west-3.compute.amazonaws.com ec2-15-236-236-160.eu-west-3.compute.amazonaws.com — — — ec2-35-181-18-45.eu-west-3.compute.amazonaws.com	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
20	3600s	mx2.improvmx.com	13.36.107.63 13.36.222.39 15.236.61.92 2a05:d012:412:e201:1f6e:f6e4:8fd7:4678 2a05:d012:412:e202:e81e:cc44:3b53:8a3d 2a05:d012:412:e203:7e33:3d9c:28d7:ee20	ec2-13-36-107-63.eu-west-3.compute.amazonaws.com ec2-13-36-222-39.eu-west-3.compute.amazonaws.com ec2-15-236-61-92.eu-west-3.compute.amazonaws.com — — —	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 277ms

TXT Record
v=spf1 include:spf.improvmx.com ~all

✉️ SPF

Policy	Record (cfrost.dk)
~all (soft fail)	v=spf1 include:spf.improvmx.com ~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

🔗 TLSA / DANE

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

🔐 DNSSEC261ms

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

🏷️ SOA0ms

Field	Value
Serial	2026085257
Primary NS (MNAME)	get.desec.io
Responsible (RNAME)	get@desec.io
Refresh	86400s
Retry	3600s
Expire	2419200s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

67ms

A

83ms

MX

116ms

AAAA

93ms

TXT

277ms

CAA

62ms

HTTPS

105ms

TLSA

165ms

SOA

0ms

MTA-STS

137ms

DNSSEC

261ms

SRV

103ms

Total

2512ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 16:05:19	2512ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-24 03:55:37	4248ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-20 21:43:31	1511ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-14 21:56:38	1440ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-11 20:02:26	1562ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-10 17:57:33	1378ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-06 11:59:03	1854ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-31 08:06:10	2555ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-23 20:00:09	2588ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-16 21:12:19	1399ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-10 21:55:17	1704ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-02 18:48:42	7473ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-25 14:56:47	2252ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-21 14:28:24	4159ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-16 20:10:59	680ms	2 NS 1 A 2 MX	🔒 Secure	View