mx.dct21.jp - robtex.com
mx.dct21.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 160.251.229.95🇯🇵 GMOOSK-NET160.251.229.0/24 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| PTR | mx-09.gmoserver.jp | ||||||
dct21.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 160.251.229.82🇯🇵 GMOOSK-NET160.251.229.0/24 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan | ||||||
| NS | dns01.gmoserver.jp ⭐ | ||||||
| NS | dns02.gmoserver.jp | ||||||
| MX | mx.dct21.jp ⭐ | ||||||
| TXT | v=spf1 include:spf.gmoserver.jp MS=ms25239026 ~all | ||||||
| SOA | dns01.gmoserver.jphostmaster@dct21.jp 2016-07-29 #2 | ||||||
MX for
Same first word
Similar names
DNS History
2 records (1 active, 1 former)
○A157.7.144.172015-06-27 → 2016-05-04 · 4 obs
● 2015-06-27 01:35:52
● 2016-05-04 03:24:58
○ 2026-02-19 19:48:40
○ 2026-03-28 07:02:34
● 2016-05-04 03:24:58
○ 2026-02-19 19:48:40
○ 2026-03-28 07:02:34
●A160.251.229.952026-02-19 → 2026-03-28 · 3 obs
○ 2016-05-04 03:24:58
● 2026-02-19 19:48:40
● 2026-03-28 07:02:34
● 2026-02-19 19:48:40
● 2026-03-28 07:02:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | e.dns.jp, b.dns.jp, a.dns.jp, d.dns.jp... | - |
| dct21.jp | dns01.gmoserver.jp, dns02.gmoserver.jp | - |
✅ Authoritative Response
Server:157.7.34.81
NS records: dns01.gmoserver.jp, dns02.gmoserver.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dct21.jp (unsigned zone)
⏱️ Timing
Total: 2710ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 160.251.229.95 |
Analysis
Mail Server Role
mx.dct21.jp is the mail server for dct21.jp.
IP Addresses
mx.dct21.jp points to a single IP number: 160.251.229.95.
other host names for instance mx.fanafrance.co.jp, mx.jt-partners.co.jp, mx.productionlabo.co.jp, mx.orca-qa.com and mx.yokomori.info share IP numbers with mx.dct21.jp.