`study.mecnet.jp`

DNSSEC	⚠️ Not signed
A	133.159.72.104^{🇯🇵 IIJ-AS133.159.0.0/16 IIJ IPv4 BLOCK ( AS2497 )}
		PTR	`104.72.159.133.static.iijgio.jp`
A	133.159.115.11^{🇯🇵 IIJ-AS133.159.0.0/16 IIJ IPv4 BLOCK ( AS2497 )}

`mecnet.jp`

	DNSSEC	⚠️ Not signed
	A	133.159.72.104^{🇯🇵 IIJ-AS133.159.0.0/16 IIJ IPv4 BLOCK ( AS2497 )}
	A	133.159.115.11^{🇯🇵 IIJ-AS133.159.0.0/16 IIJ IPv4 BLOCK ( AS2497 )}
	NS	`ns1.xbiz.ne.jp` ⭐
	NS	`ns2.xbiz.ne.jp`
	NS	`ns3.xbiz.ne.jp`
	MX	`mecnet.jp` ⭐
	TXT	`google-site-verification=C9bL7JJ_X-bp-FuQZLFOETexAXdnlzWytd5Rkh634lM`
	TXT	`v=spf1 +a:sv253.xbiz.ne.jp +a:mecnet.jp +mx include:spf.sender.xserver.jp ~all`
	SOA	`ns1.xbiz.ne.jp`root@xbiz.ne.jp serial=0

📈 Tranco rank: #804,805

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DNS History

2 records (2 active, 0 former)

●A133.159.115.112026-03-17 → 2026-03-27 · 2 obs

● 2026-03-17 04:54:14
● 2026-03-27 16:33:28

●A133.159.72.1042026-03-17 → 2026-03-27 · 2 obs

● 2026-03-17 04:54:14
● 2026-03-27 16:33:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
mecnet.jp	ns1.xbiz.ne.jp, ns2.xbiz.ne.jp, ns3.xbiz.ne.jp	3 records

✅ Authoritative Response

Server:157.112.191.237

NS records: ns1.xbiz.ne.jp, ns2.xbiz.ne.jp, ns3.xbiz.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mecnet.jp (unsigned zone)

⏱️ Timing

Total: 744ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`133.159.72.104, 133.159.115.11`

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (ns1.xbiz.ne.jp, ns2.xbiz.ne.jp, ns3.xbiz.ne.jp)

Analysis

IP Addresses

study.mecnet.jp resolves to two IP numbers: 133.159.72.104 and 133.159.115.11.

Other host names, for instance mecnet.jp, share IP numbers with study.mecnet.jp.

study.mecnet.jp - robtex.com

study.mecnet.jp

mecnet.jp