rxtx.dk

📜 Historical scan 2026-07-03 10:11:53 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rxtx.dk is a .dk domain served by 2 nameservers (opal.ns.cloudflare.com, vicente.ns.cloudflare.com). It was registered on 25 April 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.19.13 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by rxtx-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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#

2 records 291ms

Nameserver	IP addresses	PTR	ASN / ISP
opal.ns.cloudflare.com	108.162.194.100 162.159.38.100 172.64.34.100 2606:4700:50::a29f:2664 2803:f800:50::6ca2:c264 2a06:98c1:50::ac40:2264	opal.ns.cloudflare.com opal.ns.cloudflare.com opal.ns.cloudflare.com opal.ns.cloudflare.com opal.ns.cloudflare.com opal.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
vicente.ns.cloudflare.com	108.162.195.239 162.159.44.239 172.64.35.239 2606:4700:58::a29f:2cef 2803:f800:50::6ca2:c3ef 2a06:98c1:50::ac40:23ef	vicente.ns.cloudflare.com vicente.ns.cloudflare.com vicente.ns.cloudflare.com vicente.ns.cloudflare.com vicente.ns.cloudflare.com vicente.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 258ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.19.13	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.184.112	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 262ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	60s	rxtx-dk.mail.protection.outlook.com	2a01:111:f403:ca04::f 2a01:111:f403:ca09::1 2a01:111:f403:ca09::6 2a01:111:f403:ca09::8 52.101.68.27 52.101.68.32 52.101.73.24 52.101.73.4	mail-db7pr03cu00507.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-as8pr05cu00300.inbound.protection.outlook.com mail-am0pr83cu00404.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40

🔷 AAAA Records (IPv6)#

2 records 272ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3037::6815:130d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:b870	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 261ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.19.13,172.67.184.112 ech=AEX+DQBB3gAgACCPKMPUWYsfllfGVguuvZBi9k/vK3KCiR6DJ8kZWt9oGwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3037::6815:130d,2606:4700:3037::ac43:b870

📝 TXT Records#

3 records 1298ms

TXT Record
google-site-verification=WjBUJotU6XhhMDw_EOAUK_oNlGBvUXaE_ce1kVC2D0k
MS=ms54108000
v=spf1 include:spf.protection.outlook.com ip4:95.111.254.125 -all

✉️ SPF#

Policy	Record (rxtx.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com ip4:95.111.254.125 -all

📨 DMARC#

Policy	Record (_dmarc.rxtx.dk)
p=quarantine	v=DMARC1; p=quarantine; sp=none; rua=mailto:20c69a161ebb4805a21b98048f22640b@dmarc-reports.cloudflare.net

📬 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 2026-10-14 01:34:16

www	Exists, no address
www vs bare domain	Neither resolves rxtx.dk: no address www.rxtx.dk: no address
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-rxtx-dk._domainkey.rxtxdk.q-v1.dkim.mail.microsoft	RSA · ~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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

1675ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2408362780
Primary NS (MNAME)	opal.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-21 20:54:01

Field	Value
Registrar	Simply.com A/S
Registered	2012-04-25
Expires	2028-04-30 (553d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

291ms

258ms

262ms

AAAA

272ms

TXT

1298ms

CAA

272ms

HTTPS

261ms

TLSA

665ms

SOA

0ms

MTA-STS

342ms

DNSSEC

1675ms

SRV

327ms

Total

9568ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-14 01:34:16	3219ms	2 NS 0 A 1 MX	🔓 Insecure
2026-10-12 23:37:16	3781ms	2 NS 0 A 1 MX	🔓 Insecure
2026-10-11 21:54:07	2355ms	2 NS 0 A 1 MX	🔓 Insecure
2026-10-07 18:42:51	1665ms	2 NS 0 A 1 MX	🔓 Insecure
2026-10-07 10:14:44	912ms	2 NS 0 A 1 MX	🔓 Insecure
2026-10-03 06:03:07	894ms	2 NS 0 A 1 MX	🔓 Insecure
2026-10-01 05:58:07	1538ms	2 NS 0 A 1 MX	🔓 Insecure
2026-09-26 04:54:45	795ms	2 NS 0 A 1 MX	🔓 Insecure
2026-09-21 05:07:00	1845ms	2 NS 0 A 1 MX	🔓 Insecure
2026-09-16 07:11:01	1346ms	2 NS 0 A 1 MX	🔓 Insecure
2026-09-05 17:45:22	1585ms	2 NS 0 A 1 MX	🔓 Insecure
2026-08-29 17:38:19	1687ms	2 NS 0 A 1 MX	🔓 Insecure
2026-08-27 12:13:09	837ms	2 NS 0 A 1 MX	🔓 Insecure
2026-08-26 11:52:31	11126ms	2 NS 0 A 1 MX	🔓 Insecure
2026-08-03 13:35:55	3042ms	2 NS 0 A 1 MX	🔓 Insecure
2026-08-01 23:29:02	3907ms	2 NS 0 A 1 MX	🔓 Insecure
2026-07-27 22:29:44	33065ms	2 NS 0 A 1 MX	🔓 Insecure
2026-07-11 11:32:44	3445ms	2 NS 0 A 1 MX	🔓 Insecure
2026-07-08 20:14:26	1469ms	2 NS 0 A 1 MX	🔓 Insecure
2026-07-05 13:29:34	9916ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-03 10:11:53 shown	9568ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-18 00:37:19	2225ms	2 NS 2 A 1 MX	🔓 Insecure