dsrs.dk

📜 Historical scan 2026-07-17 23:18:29 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

dsrs.dk is a .dk domain served by 2 nameservers (kay.ns.cloudflare.com, tanner.ns.cloudflare.com). It was registered on 14 August 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.37.166 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by dsrs-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 37ms

Nameserver	IP addresses	PTR	ASN / ISP
kay.ns.cloudflare.com	108.162.192.125 172.64.32.125 173.245.58.125 2606:4700:50::adf5:3a7d 2803:f800:50::6ca2:c07d 2a06:98c1:50::ac40:207d	kay.ns.cloudflare.com kay.ns.cloudflare.com kay.ns.cloudflare.com kay.ns.cloudflare.com kay.ns.cloudflare.com kay.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
tanner.ns.cloudflare.com	108.162.195.97 162.159.44.97 172.64.35.97 2606:4700:58::a29f:2c61 2803:f800:50::6ca2:c361 2a06:98c1:50::ac40:2361	tanner.ns.cloudflare.com tanner.ns.cloudflare.com tanner.ns.cloudflare.com tanner.ns.cloudflare.com tanner.ns.cloudflare.com tanner.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 48ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.37.166	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.210.150	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 48ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	dsrs-dk.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca04::e 2a01:111:f403:ca09::20 2a01:111:f403:ca09::d 52.101.68.10 52.101.68.18 52.101.73.11 52.101.73.15	mail-db4pr02cu00307.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-am9pr04cu00107.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 → 40.104.116.8
🔶 Autoconfig	104.21.37.166

🔷 AAAA Records (IPv6)#

2 records 32ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::ac43:d296	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:25a6	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 40ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.37.166,172.67.210.150 ipv6hint=2606:4700:3032::ac43:d296,2606:4700:3035::6815:25a6

🔌 SRV Records#

1 records 117ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

5 records 145ms

TXT Record
apple-domain-verification=iMqso7vO5TE7NyJM
apple-domain-verification=wMzru6mfLYsGnjjy
facebook-domain-verification=ywirsms1ykws9i3ad1gsjk7z22ts21
google-site-verification=8iJdsR3nxiB8hilD9iMpfjQUV3Wrbt76IEbVKFi2WzI
v=spf1 mx a include:spf.netsite.dk include:spf.protection.outlook.com include:send.heyloyalty.com include:web.shared.mysmtp.com -all ip4:40.107.20.65 include:amazonses.com ~all

✉️ SPF#

Policy	Record (dsrs.dk)
-all (hard fail)	v=spf1 mx a include:spf.netsite.dk include:spf.protection.outlook.com include:send.heyloyalty.com include:web.shared.mysmtp.com -all ip4:40.107.20.65 include:amazonses.com ~all

📨 DMARC#

Policy	Record (_dmarc.dsrs.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:e2faaf4773854b9abba8c56126b6bc26@dmarc-reports.cloudflare.net,mailto:aec399a9@mxtoolbox.dmarc-report.com; ruf=mailto:aec399a9@forensics.dmarc-report.com

📬 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 2026-10-13 04:09:56

www	104.21.37.166 172.67.210.150 2606:4700:3032::ac43:d296 2606:4700:3035::6815:25a6 (AS13335) (address records, no CNAME)
www vs bare domain	Same network dsrs.dk: 104.21.37.166 172.67.210.150 2606:4700:3032::ac43:d296 2606:4700:3035::6815:25a6 (AS13335) www.dsrs.dk: 104.21.37.166 172.67.210.150 2606:4700:3032::ac43:d296 2606:4700:3035::6815:25a6 (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#

3 found

Selector	CNAME	Key
s1	s1.domainkey.u9150225.wl226.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u9150225.wl226.sendgrid.net	RSA · ~1024 bit below 2048 bit
selector2	selector2-dsrs-dk._domainkey.dsrsdk.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: 10/10 · policy: ~all

warn 10 of the 10 allowed DNS lookups used: one more include can break SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

138ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2409785253
Primary NS (MNAME)	kay.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-11 21:22:17

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2001-08-14
Expires	2027-09-30 (348d)

🔗 Same registrant#

1 domain

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).

Domain	Registrar
dsrs-crew.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

37ms

48ms

AAAA

32ms

TXT

145ms

CAA

45ms

HTTPS

40ms

TLSA

179ms

SOA

0ms

MTA-STS

69ms

DNSSEC

138ms

SRV

117ms

Total

1234ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 12:32:45	1105ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-02 02:20:45	998ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-14 07:35:25	2230ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-07 05:21:17	2248ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-27 21:00:09	9954ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-18 07:18:28	3249ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-17 05:19:10	1770ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-15 17:16:26	1567ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-21 19:57:05	10292ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-17 23:18:29 shown	1234ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-15 19:32:31	3522ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-09 01:41:36	1771ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-28 16:38:25	2801ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-28 00:23:10	1596ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-17 04:50:45	1804ms	2 NS 2 A 1 MX	🔒 Secure