sa21.dk

Records from scan: 2026-10-05 00:09:00 · 1273ms total · last checked 2026-10-22 02:31 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sa21.dk is a .dk domain served by 2 nameservers (josephine.ns.cloudflare.com, leo.ns.cloudflare.com). It was registered on 29 January 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by sa21-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 45ms

Nameserver	IP addresses	PTR	ASN / ISP
josephine.ns.cloudflare.com	108.162.194.64 162.159.38.64 172.64.34.64 2606:4700:50::a29f:2640 2803:f800:50::6ca2:c240 2a06:98c1:50::ac40:2240	josephine.ns.cloudflare.com josephine.ns.cloudflare.com josephine.ns.cloudflare.com josephine.ns.cloudflare.com josephine.ns.cloudflare.com josephine.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
leo.ns.cloudflare.com	108.162.195.241 162.159.44.241 172.64.35.241 2606:4700:58::a29f:2cf1 2803:f800:50::6ca2:c3f1 2a06:98c1:50::ac40:23f1	leo.ns.cloudflare.com leo.ns.cloudflare.com leo.ns.cloudflare.com leo.ns.cloudflare.com leo.ns.cloudflare.com leo.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 42ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	sa21-dk.mail.protection.outlook.com	2a01:111:f403:ca09::26 2a01:111:f403:ca21::e 2a01:111:f403:ca3c::a 2a01:111:f403:ca48::10 52.101.103.36 52.101.209.31 52.101.73.145 52.101.91.159	mail-am8pr83cu00106.inbound.protection.outlook.com mail-matpr04cu00306.inbound.protection.outlook.com mail-zrxpr07cu00102.inbound.protection.outlook.com mail-miypr05cu00100.inbound.protection.outlook.com mail-miypr05cu00104.inbound.protection.outlook.com mail-cpjpr05cu00207.inbound.protection.outlook.com mail-am6pr02cu00301.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 → 52.98.154.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 209ms

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

✉️ SPF#

Policy	Record (sa21.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.sa21.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:51653ea52d4a41f5a066a07d464b73c4@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#

checked 2026-10-11 06:28:58

www	104.21.39.240 172.67.150.146 2606:4700:3030::6815:27f0 2606:4700:3030::ac43:9692 (AS13335) (address records, no CNAME)
www vs bare domain	Only www resolves sa21.dk: no address www.sa21.dk: 104.21.39.240 172.67.150.146 2606:4700:3030::6815:27f0 2606:4700:3030::ac43:9692 (AS13335) (all like this)
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

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.sa21.dk	3qbzXZjCqFRI47Kjy7UCkpYSUzWupZ3Q2LAG_BFPQC8

🔗 TLSA / DANE#

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

🔐 DNSSEC#

58ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

35ms

Field	Value
Serial	2416619074
Primary NS (MNAME)	josephine.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-05 00:51:50

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2012-01-29
Expires	2029-01-31 (832d)

📋 WHOIS#

⏱️ Lookup Timing#

45ms

48ms

42ms

AAAA

38ms

TXT

209ms

CAA

27ms

HTTPS

39ms

TLSA

778ms

SOA

35ms

MTA-STS

52ms

DNSSEC

58ms

SRV

81ms

Total

1273ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-05 00:09:00 shown	1273ms	2 NS 0 A 1 MX	🔒 Secure
2026-10-02 00:03:24	2186ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-29 23:45:05	2545ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-21 06:48:04	1459ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-16 07:32:09	1378ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-12 12:51:28	2437ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-10 02:45:26	1660ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-08 08:24:42	1248ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-05 05:02:19	1999ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-26 10:13:31	1691ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-24 18:09:54	1056ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-23 17:15:56	3285ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-14 22:27:08	3381ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-06 15:11:27	17422ms	2 NS 0 A 1 MX	🔒 Secure
2026-07-19 10:20:40	9552ms	2 NS 0 A 1 MX	🔒 Secure
2026-07-17 01:27:20	2149ms	2 NS 0 A 1 MX	🔒 Secure
2026-07-06 00:32:54	2720ms	2 NS 0 A 1 MX	🔒 Secure
2026-07-03 13:08:58	806ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-29 10:42:23	1135ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-28 17:27:27	959ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-25 20:16:16	1350ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-23 21:33:06	2932ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-22 11:11:15	897ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 18:12:28	5702ms	2 NS 0 A 1 MX	🔒 Secure