21st.dk DNS records

🖥️ Nameservers2 records 49ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.dandomain.dk	185.25.141.3 2a02:2339:4006:109::dd	ns.dandomain.dk ns.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.dandomain.dk	2a02:2339:1:108::dd:dd 91.197.248.66	ns2.dandomain.dk ns2.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records1 records 45ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
194.150.113.21	3600s	—	AS48854	team.blue Denmark A/S	194.150.112.0/22	🇩🇰 Denmark	Skanderborg

📧 MX Records5 records 45ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	108.177.14.26 2a00:1450:4010:c0f::1a 2a00:1450:4010:c0f::1a	lt-in-f26.1e100.net lt-in-f26.1e100.net lt-in-x1a.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1a	so-in-f27.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	aspmx2.googlemail.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	aspmx3.googlemail.com	172.253.158.26 2404:6800:4003:c26::1a	so-in-f26.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 138ms

TXT Record
google-site-verification=qamg4W-hlkRUVKhQ0yYyAfV_Yr5r4gbzKR_utPYOgK8

✉️ SPF

✗ No SPF record — mail spoofing not restricted

📨 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

🔗 TLSA / DANE

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

🔐 DNSSEC65ms

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

🏷️ SOA45ms

Field	Value
Serial	2023061501
Primary NS (MNAME)	ns.dandomain.dk
Responsible (RNAME)	hostmaster@dandomain.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

49ms

A

45ms

MX

45ms

AAAA

49ms

TXT

138ms

CAA

38ms

HTTPS

45ms

TLSA

51ms

SOA

45ms

MTA-STS

34ms

DNSSEC

65ms

SRV

46ms

Total

925ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-27 21:24:02	925ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-06-25 21:16:52	595ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-06-22 05:45:53	1190ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 13:18:35	12262ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-06-16 13:13:03	4902ms	2 NS 1 A 5 MX	🔒 Secure	View