t5r.dk

📜 Historical scan 2026-09-29 21:31:58 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

t5r.dk is a .dk domain served by 2 nameservers (sneh.ns.cloudflare.com, thomas.ns.cloudflare.com). It was registered on 6 December 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.14.74 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by t5r-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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 35ms

Nameserver	IP addresses	PTR	ASN / ISP
sneh.ns.cloudflare.com	108.162.194.162 162.159.38.162 172.64.34.162 2606:4700:50::a29f:26a2 2803:f800:50::6ca2:c2a2 2a06:98c1:50::ac40:22a2	sneh.ns.cloudflare.com sneh.ns.cloudflare.com sneh.ns.cloudflare.com sneh.ns.cloudflare.com sneh.ns.cloudflare.com sneh.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
thomas.ns.cloudflare.com	108.162.193.238 172.64.33.238 173.245.59.238 2606:4700:58::adf5:3bee 2803:f800:50::6ca2:c1ee 2a06:98c1:50::ac40:21ee	thomas.ns.cloudflare.com thomas.ns.cloudflare.com thomas.ns.cloudflare.com thomas.ns.cloudflare.com thomas.ns.cloudflare.com thomas.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 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.14.74	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.158.45	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	t5r-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca21::c 2a01:111:f403:ca48::a 2a01:111:f403:ca48::c 52.101.185.24 52.101.73.145 52.101.91.156 52.101.91.159	mail-db4pr02cu00204.inbound.protection.outlook.com mail-matpr04cu00204.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-zrxpr07cu00100.inbound.protection.outlook.com mail-am6pr02cu00301.inbound.protection.outlook.com mail-maspr04cu00104.inbound.protection.outlook.com mail-matpr04cu00207.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 → 40.104.116.56

🔷 AAAA Records (IPv6)#

2 records 38ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::6815:e4a	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:9e2d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 50ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.14.74,172.67.158.45 ech=AEX+DQBBVAAgACCYaEk5fchu1YXXkg45WmJCudxxajgUL6N7HV1VnKDVcgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:e4a,2606:4700:3037::ac43:9e2d

📝 TXT Records#

2 records 205ms

TXT Record
MS=974801ABACCF4BF9B98FECA2303A71F5DA6BDA78
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (t5r.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.t5r.dk)
p=reject	v=DMARC1; p=reject; ri=43200

📬 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 2026-10-08 22:17:15

www	104.21.14.74 172.67.158.45 2606:4700:3032::6815:e4a 2606:4700:3037::ac43:9e2d (AS13335) (address records, no CNAME)
www vs bare domain	Same network t5r.dk: 104.21.14.74 172.67.158.45 2606:4700:3032::6815:e4a 2606:4700:3037::ac43:9e2d (AS13335) www.t5r.dk: 104.21.14.74 172.67.158.45 2606:4700:3032::6815:e4a 2606:4700:3037::ac43:9e2d (AS13335)
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-t5r-dk._domainkey.t5rdk.onmicrosoft.com	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: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.t5r.dk	9nHoX-l7cuEN9UkfQ7242sWG5uNorSZR61g6M63wbdc
TXT	_acme-challenge.t5r.dk	f7H6CHF8-QPfsj125_lG5bWU4IpkldqOuxDv4y0wtSk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

115ms

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

🏷️ SOA#

33ms

Field	Value
Serial	2416168771
Primary NS (MNAME)	sneh.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-02 22:21:21

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2000-12-06
Expires	2026-12-31 (71d)

📋 WHOIS#

⏱️ Lookup Timing#

35ms

41ms

38ms

AAAA

38ms

TXT

205ms

CAA

30ms

HTTPS

50ms

TLSA

315ms

SOA

33ms

MTA-STS

62ms

DNSSEC

115ms

SRV

59ms

Total

1112ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 21:46:22	684ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-29 21:31:58 shown	1112ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-24 20:12:17	1841ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-24 08:11:39	2739ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-19 17:10:01	1751ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-05 15:12:58	1421ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-29 16:37:24	2068ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-28 11:27:29	862ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-11 22:46:53	1721ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-19 14:52:53	2090ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-17 14:01:10	10951ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-25 15:14:22	1460ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-20 06:45:49	3963ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-20 05:25:41	734ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-17 13:20:56	3680ms	2 NS 2 A 1 MX	🔒 Secure