ontsu.co.jp - robtex.com
ontsu.co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 202.254.238.17🇯🇵 XSERVER-AS202.254.236.0/22 XSERVER Inc. | ||||||
| PTR | sv16.xbiz.ne.jp | ||||||
| NS | ns1.xbiz.ne.jp ⭐ | ||||||
| A | 157.112.182.247🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc. | ||||||
| PTR | ns1.xbiz.ne.jp | ||||||
| NS | ns2.xbiz.ne.jp | ||||||
| A | 35.76.79.244🇯🇵 Amazon35.72.0.0/13 EC2 NRT prefix | ||||||
| PTR | ns2.xbiz.ne.jp | ||||||
| NS | ns3.xbiz.ne.jp | ||||||
| A | 157.112.191.237🇯🇵 XSERVER-AS157.112.184.0/21 XSERVER Inc. | ||||||
| PTR | ns3.xbiz.ne.jp | ||||||
| MX | ontsu.co.jp ⭐ | ||||||
| A | 202.254.238.17🇯🇵 XSERVER-AS202.254.236.0/22 XSERVER Inc. | ||||||
| PTR | sv16.xbiz.ne.jp | ||||||
| TXT | v=spf1 +a:sv16.xbiz.ne.jp +a:ontsu.co.jp +mx include:spf.sender.xserver.jp ~all | ||||||
| SOA | ns1.xbiz.ne.jproot@xbiz.ne.jp serial=0 | ||||||
co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| TXT | co.jp. | ||||||
WOT: SAFE (58/100)
MX for
ontsu.co.jp |
Subdomains
lp1b.ontsu.co.jp |
Same first word
ontsu.co.jp |
Similar names
DNS History
11 records (5 active, 6 former)
○NSfjkdns01.alpha-prm.jp2015-08-06 → 2017-03-24 · 4 obs
● 2017-03-24 19:17:10
○ 2026-04-14 03:58:16
○ 2026-04-23 11:24:32
○NSfjkdns02.alpha-prm.jp2015-08-06 → 2017-03-24 · 4 obs
● 2017-03-24 19:17:10
○ 2026-04-14 03:58:16
○ 2026-04-23 11:24:32
○NSfjkdns03.alpha-prm.jp2015-08-06 → 2017-03-24 · 4 obs
● 2017-03-24 19:17:10
○ 2026-04-14 03:58:16
○ 2026-04-23 11:24:32
○NSfjkmst01.alpha-prm.jp2015-08-06 → 2017-03-24 · 4 obs
● 2017-03-24 19:17:10
○ 2026-04-14 03:58:16
○ 2026-04-23 11:24:32
●NSns1.xbiz.ne.jp2026-04-14 → 2026-04-23 · 3 obs
● 2026-04-14 03:58:16
● 2026-04-23 11:24:32
●NSns2.xbiz.ne.jp2026-04-14 → 2026-04-23 · 3 obs
● 2026-04-14 03:58:16
● 2026-04-23 11:24:32
●NSns3.xbiz.ne.jp2026-04-14 → 2026-04-23 · 3 obs
● 2026-04-14 03:58:16
● 2026-04-23 11:24:32
○MXmxi.alpha-prm.jp2015-08-06 → 2017-03-24 · 4 obs
● 2017-03-24 19:17:10
○ 2026-04-14 03:58:16
○ 2026-04-23 11:24:32
●MXontsu.co.jp2026-04-14 → 2026-04-23 · 3 obs
● 2026-04-14 03:58:16
● 2026-04-23 11:24:32
○A157.205.16.1712015-08-06 → 2017-03-24 · 4 obs
● 2017-03-24 19:17:10
○ 2026-04-14 03:58:16
○ 2026-04-23 11:24:32
●A202.254.238.172026-04-14 → 2026-04-23 · 3 obs
● 2026-04-14 03:58:16
● 2026-04-23 11:24:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| ontsu.co.jp | ns1.xbiz.ne.jp, ns3.xbiz.ne.jp, ns2.xbiz.ne.jp | 3 records |
✅ Authoritative Response
Server:157.112.182.247
NS records: ns1.xbiz.ne.jp, ns3.xbiz.ne.jp, ns2.xbiz.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ontsu.co.jp (unsigned zone)
⏱️ Timing
Total: 909ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 202.254.238.17 |
| NS | 3 | ns3.xbiz.ne.jp, ns2.xbiz.ne.jp... |
| MX | 1 | ontsu.co.jp (pri: 0) |
| TXT | 1 | v=spf1 +a:sv16.xbiz.ne.jp +a:ontsu.co.jp |
| SOA | 1 | ns1.xbiz.ne.jp root.xbiz.ne.jp |
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (ns3.xbiz.ne.jp, ns2.xbiz.ne.jp, ns1.xbiz.ne.jp)
Analysis
Hierarchy
ontsu.co.jp is the parent of lp1b.ontsu.co.jp.
Mail Server Role
ontsu.co.jp is the mail server for ontsu.co.jp.
IP Addresses
ontsu.co.jp resolves to a single IP: 202.254.238.17.
Other host names, for instance enkarz.co.jp, cues-plus.co.jp, www.jinjahoncho.or.jp, hearing-store.com and mail.eve-corp.net share IP numbers with ontsu.co.jp.
Name Servers
ontsu.co.jp delegates to three name servers: ns1.xbiz.ne.jp, ns2.xbiz.ne.jp and ns3.xbiz.ne.jp.
ontsu.co.jp shares some name servers with other domains, for example septis.co.jp, fluidrain2020.com, konomys.jp, minaminagasaki-sp.jp and harako-js.com.
Host names with a single IP: ns1.xbiz.ne.jp points to 157.112.182.247; ns2.xbiz.ne.jp points to 35.76.79.244; ns3.xbiz.ne.jp points to 157.112.191.237.
Mail Servers
One mail server handles ontsu.co.jp.
Host name ontsu.co.jp points to IP 202.254.238.17.