2study.dk DNS records

🖥️ Nameservers2 records 31ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records1 records 30ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
146.255.33.84	43200s	84.33.255.146.host.secureserver.net	AS16509	Amazon.com, Inc.	146.255.32.0/22	🇳🇱 The Netherlands	Amsterdam

📧 MX Records5 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	43200s	aspmx.l.google.com	209.85.233.26 2a00:1450:4010:c01::1b 2a00:1450:4010:c01::1b	lr-in-f26.1e100.net lh-in-f27.1e100.net lh-in-x1b.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	43200s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	43200s	alt2.aspmx.l.google.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
10	43200s	aspmx2.googlemail.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	43200s	aspmx3.googlemail.com	172.253.158.27 2404:6800:4003:c26::1b	so-in-f27.1e100.net so-in-f27.1e100.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 140ms

TXT Record
google-site-verification=zex-CyfffgGMgHi2ydZSWg_LXnfALiUNV_uNdmS_9gU

✉️ 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)

🔐 DNSSEC53ms

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

🏷️ SOA0ms

Field	Value
Serial	2026072501
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

31ms

A

30ms

MX

31ms

AAAA

30ms

TXT

140ms

CAA

30ms

HTTPS

30ms

TLSA

56ms

SOA

0ms

MTA-STS

40ms

DNSSEC

53ms

SRV

61ms

Total

1030ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 11:01:13	1813ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-08-25 03:38:30	9469ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-08-11 16:58:10	5104ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-07-25 12:56:34	1030ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-06-28 06:44:09	819ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-06-27 08:52:22	1689ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-06-27 03:14:55	778ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-06-16 12:44:26	1133ms	2 NS 1 A 5 MX	🔒 Secure	View