a21.dk

📜 Historical scan 2026-06-16 12:38:57 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

a21.dk is a .dk domain served by 2 nameservers (ns.scannet2.dk, ns2.scannet2.dk). It was registered on 1 July 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.215 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by a21-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 103ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.scannet2.dk	—	—	—
ns2.scannet2.dk	—	—	—

🌍 A Records#

1 records 94ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
77.111.240.215	—	webcluster1.wordpresspod1-cph3.one.com	AS51468	One.com A/S	77.111.240.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 105ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	a21-dk.mail.protection.outlook.com	52.101.68.16 52.101.73.153 52.101.73.19 52.101.73.22	mail-db4pr02cu00400.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

4 records 219ms

TXT Record
google-site-verification=oLGzO2ygNO2SlxLR9SyeJax5n_XildhJb9x3lo26w60
MS=ms44574969
MS=ms52225617
v=spf1 ip4:62.116.200.20 ip4:152.115.82.69 ip4:195.249.225.194 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (a21.dk)
-all (hard fail)	v=spf1 ip4:62.116.200.20 ip4:152.115.82.69 ip4:195.249.225.194 include:spf.protection.outlook.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 2026-10-04 08:50:40

www	Address record (no CNAME)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-a21-dk._domainkey.miljopunkta21.onmicrosoft.com	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#

2068ms

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

🏷️ SOA#

96ms

Field	Value
Serial	2022060201
Primary NS (MNAME)	ns.scannet2.dk
Responsible (RNAME)	hostmaster@scannet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-06 11:42:33

Field	Value
Registrar	ONE.COM A/S
Registered	2004-07-01
Expires	2027-07-31 (287d)

📋 WHOIS#

⏱️ Lookup Timing#

103ms

94ms

105ms

AAAA

101ms

TXT

219ms

CAA

102ms

HTTPS

95ms

TLSA

2082ms

SOA

96ms

MTA-STS

39ms

DNSSEC

2068ms

SRV

0ms

Total

4607ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-08-26 04:00:07	1349ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 00:51:13	973ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-21 08:38:58	751ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 18:00:31	1435ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 12:38:57 shown	4607ms	2 NS 1 A 1 MX	🔒 Secure