impossible.dk DNS records

🖥️ Nameservers2 records 57ms

Nameserver	IP addresses	PTR	ASN / ISP
dean.ns.cloudflare.com	108.162.193.153 172.64.33.153 173.245.59.153 2606:4700:58::adf5:3b99 2803:f800:50::6ca2:c199 2a06:98c1:50::ac40:2199	dean.ns.cloudflare.com dean.ns.cloudflare.com dean.ns.cloudflare.com dean.ns.cloudflare.com dean.ns.cloudflare.com dean.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
suzanne.ns.cloudflare.com	108.162.194.87 162.159.38.87 172.64.34.87 2606:4700:50::a29f:2657 2803:f800:50::6ca2:c257 2a06:98c1:50::ac40:2257	suzanne.ns.cloudflare.com suzanne.ns.cloudflare.com suzanne.ns.cloudflare.com suzanne.ns.cloudflare.com suzanne.ns.cloudflare.com suzanne.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records1 records 55ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
127.0.0.1	300s	—	—	—	—	—	—

📧 MX Records1 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx.uplink.dk	2a0c:8900:3:298a::1 45.86.125.212	mx.uplink.dk mx.uplink.dk	AS200462 ETH-Services AS200462 ETH-Services

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 137ms

TXT Record
v=spf1 mx -all

✉️ SPF

Policy	Record (impossible.dk)
-all (hard fail)	v=spf1 mx -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

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.impossible.dk	4JQw7kq-09pV1fe_dDfpxZze7ZqsBLChPn7_ih8U9wc
TXT	_acme-challenge.impossible.dk	LZnN5O4bXXseOX2MTyTRJ1YFKoCN5vkYRrSHqlat_r8

🔗 TLSA / DANE1 records 226ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.uplink.dk	DANE-EE · SPKI · SHA-256	B0971508DDECB3EF3E4651E930E49AEE…

🔐 DNSSEC132ms

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

🏷️ SOA49ms

Field	Value
Serial	2407244336
Primary NS (MNAME)	dean.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

57ms

A

55ms

MX

37ms

AAAA

44ms

TXT

137ms

CAA

56ms

HTTPS

40ms

TLSA

226ms

SOA

49ms

MTA-STS

66ms

DNSSEC

132ms

SRV

125ms

Total

827ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 00:09:10	1944ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-23 16:46:59	2853ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-22 14:43:16	9913ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-18 12:08:50	1387ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-17 08:06:15	2546ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-03 18:11:47	2158ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-06 03:43:24	2162ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 17:59:46	1306ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 12:13:31	1167ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-23 21:39:50	963ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 08:38:17	641ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-19 09:33:46	991ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 13:39:41	827ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 14:40:38	461ms	0 NS 0 A 0 MX	❓ Unknown	View