rexpc.dk

📜 Historical scan 2026-09-24 14:29:20 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rexpc.dk is a .dk domain served by 2 nameservers (apollo.ns.cloudflare.com, pat.ns.cloudflare.com). It was registered on 8 April 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.53.188 is hosted by Cloudflare, Inc. (AS13335). 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 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#

2 records 34ms

Nameserver	IP addresses	PTR	ASN / ISP
apollo.ns.cloudflare.com	108.162.193.66 172.64.33.66 173.245.59.66 2606:4700:58::adf5:3b42 2803:f800:50::6ca2:c142 2a06:98c1:50::ac40:2142	apollo.ns.cloudflare.com apollo.ns.cloudflare.com apollo.ns.cloudflare.com apollo.ns.cloudflare.com apollo.ns.cloudflare.com apollo.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
pat.ns.cloudflare.com	108.162.192.139 172.64.32.139 173.245.58.139 2606:4700:50::adf5:3a8b 2803:f800:50::6ca2:c08b 2a06:98c1:50::ac40:208b	pat.ns.cloudflare.com pat.ns.cloudflare.com pat.ns.cloudflare.com pat.ns.cloudflare.com pat.ns.cloudflare.com pat.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 63ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.53.188	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.216.44	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 53ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	172.253.152.26 2a00:1450:4010:c1c::1a	yulpptr-in-f26.1e100.net la-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1a	yukulwh-in-f26.1e100.net mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	300s	alt3.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1b	so-in-f26.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	alt4.aspmx.l.google.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	172.67.216.44
🔶 Autoconfig	104.21.53.188

🔷 AAAA Records (IPv6)#

2 records 44ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3037::6815:35bc	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:d82c	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 36ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.53.188,172.67.216.44 ech=AEX+DQBBtAAgACBMVhU6Pprc/Q2nBif/2QW9U82vLhRMfXSxE9CtcXcrPgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3037::6815:35bc,2606:4700:3037::ac43:d82c

📝 TXT Records#

2 records 224ms

TXT Record
v=spf1 include:_spf.google.com include:spf.simply.com -all
v=spf1 include:spf.simply.com -all

✉️ SPF#

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (rexpc.dk)
-all (hard fail)	v=spf1 include:_spf.google.com include:spf.simply.com -all
-all (hard fail)	v=spf1 include:spf.simply.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-23 05:41:49

www	104.21.53.188 172.67.216.44 2606:4700:3037::6815:35bc 2606:4700:3037::ac43:d82c (AS13335) (address records, no CNAME)
www vs bare domain	Same network rexpc.dk: 104.21.53.188 172.67.216.44 2606:4700:3037::6815:35bc 2606:4700:3037::ac43:d82c (AS13335) www.rexpc.dk: 104.21.53.188 172.67.216.44 2606:4700:3037::6815:35bc 2606:4700:3037::ac43:d82c (AS13335)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

error 2 SPF records: receivers must treat that as a permanent error (RFC 7208 §4.5)

🔗 TLSA / DANE#

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

🔐 DNSSEC#

2056ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2415701862
Primary NS (MNAME)	apollo.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-09-18 03:16:42

Field	Value
Registrar	Simply.com A/S
Registered	2015-04-08
Expires	2027-04-30 (188d)

📋 WHOIS#

⏱️ Lookup Timing#

34ms

63ms

53ms

AAAA

44ms

TXT

224ms

CAA

59ms

HTTPS

36ms

TLSA

94ms

SOA

0ms

MTA-STS

76ms

DNSSEC

2056ms

SRV

75ms

Total

3144ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-23 05:41:49	2695ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-30 08:14:07	697ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-24 14:29:20 shown	3144ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-24 13:37:48	969ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-23 13:17:36	972ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-18 03:05:44	2243ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-27 11:27:16	1054ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-27 03:07:45	1432ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-26 02:30:06	1593ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-20 15:22:31	1214ms	4 NS 1 A 5 MX	🔒 Secure
2026-06-25 06:50:57	1847ms	4 NS 1 A 5 MX	🔒 Secure
2026-06-18 05:38:31	856ms	4 NS 1 A 5 MX	🔒 Secure