tk.cuio.net - dns.ninja

`tk.cuio.net`

DNSSEC	⚠️ Not signed
A	153.121.57.24^{🇯🇵 SAKURA-B153.121.32.0/19 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-14 Minami Honmachi, Chuo-ku, Osaka 541-0054, Japan}
		PTR	`tk.cuio.net`

`cuio.net`

	DNSSEC	⚠️ Not signed
	A	2001:e42:102:1109:153:121:57:24^{🇯🇵 SAKURA-B2001:e40::/30 SAKURA Internet Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka 530-0011, JAPAN}
	A	153.121.57.24^{🇯🇵 SAKURA-B153.121.32.0/19 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-14 Minami Honmachi, Chuo-ku, Osaka 541-0054, Japan}
	NS	`master.dns.ne.jp` ⭐
	NS	`ns1.dns.ne.jp`
	NS	`ns2.dns.ne.jp`
	MX	`tk.cuio.net` ⭐
	TXT	`v=spf1 ip4:153.121.57.24 include:_spf.google.com ~all`
	TXT	`google-site-verification=qVP8DsPDuQ8nHSK_I0lh0jCyU7gL-ok2yFfsH-cZ_N4`
	SOA	`master.dns.ne.jp`tech@sakura.ad.jp 2026-06-29 #2

🔒 HSTS Preload (+subdomains)

PTR for

4.2.0.0.7.5.0.0.1.2.1.0.3.5.1.0.9.0.1.1.2.0.1.0.2.4.e.0.1.0.0.2.ip6.arpa

24.57.121.153.in-addr.arpa

MX for

cuio.net

Same first word

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tk.media

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DNS History

1 record (1 active, 0 former)

●A153.121.57.242026-02-14 → 2026-07-23 · 2 obs

● 2026-02-14 19:50:02
● 2026-07-23 14:25:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
cuio.net	ns1.dns.ne.jp, ns2.dns.ne.jp	-

✅ Authoritative Response

Server:61.211.236.1

NS records: ns1.dns.ne.jp, ns2.dns.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cuio.net (unsigned zone)

⏱️ Timing

Total: 2648ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`153.121.57.24`

Analysis

Mail Server Role

Mail for cuio.net is routed through the mail server tk.cuio.net.

IP Addresses

tk.cuio.net has exactly one IP address — 153.121.57.24.

cuio.net is an example of another host name that shares IP numbers with tk.cuio.net.