ptr2.jp - robtex.com
ptr2.jp
jp
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | z.dns.jp ⭐ | ||||||
| NS | a.dns.jp | ||||||
| NS | b.dns.jp | ||||||
| NS | c.dns.jp | ||||||
| NS | d.dns.jp | ||||||
| NS | e.dns.jp | ||||||
| NS | f.dns.jp | ||||||
| NS | g.dns.jp | ||||||
| NS | h.dns.jp | ||||||
| SOA | z.dns.jproot@dns.jp serial=1785065403 | ||||||
Previously NS for
ptr2.jp |
MX for
ptr2.jp |
Same first word
Similar names
DNS History
13 records (7 active, 6 former)
○NSns0.mydns.jp2015-05-31 → 2016-04-27 · 4 obs
● 2016-04-27 17:04:14
○ 2017-02-10 07:20:46
○ 2026-07-26 11:57:02
○NSns1.mydns.jp2015-05-31 → 2016-04-27 · 4 obs
● 2016-04-27 17:04:14
○ 2017-02-10 07:20:46
○ 2026-07-26 11:57:02
●NSns1.xserver.jp2017-02-10 → 2026-07-26 · 3 obs
● 2017-02-10 07:20:46
● 2026-07-26 11:57:02
○NSns2.mydns.jp2015-05-31 → 2016-04-27 · 4 obs
● 2016-04-27 17:04:14
○ 2017-02-10 07:20:46
○ 2026-07-26 11:57:02
●NSns2.xserver.jp2017-02-10 → 2026-07-26 · 3 obs
● 2017-02-10 07:20:46
● 2026-07-26 11:57:02
●NSns3.xserver.jp2017-02-10 → 2026-07-26 · 3 obs
● 2017-02-10 07:20:46
● 2026-07-26 11:57:02
●NSns4.xserver.jp2017-02-10 → 2026-07-26 · 3 obs
● 2017-02-10 07:20:46
● 2026-07-26 11:57:02
●NSns5.xserver.jp2017-02-10 → 2026-07-26 · 3 obs
● 2017-02-10 07:20:46
● 2026-07-26 11:57:02
○NSptr2.jp2015-05-31 → 2016-04-27 · 4 obs
● 2016-04-27 17:04:14
○ 2017-02-10 07:20:46
○ 2026-07-26 11:57:02
●MXptr2.jp2015-05-31 → 2026-07-26 · 2 obs
● 2026-07-26 11:57:02
○A106.172.187.2522015-05-31 → 2016-04-27 · 4 obs
● 2016-04-27 17:04:14
○ 2017-02-10 07:20:46
○ 2026-07-26 11:57:02
●A202.226.37.1322026-07-24 → 2026-07-26 · 3 obs
● 2026-07-24 23:07:52
● 2026-07-26 11:57:02
○A210.188.201.1322017-02-10 → 2017-02-10 · 4 obs
● 2017-02-10 07:20:46
○ 2026-07-24 23:07:52
○ 2026-07-26 11:57:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | e.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp... | - |
| ptr2.jp | ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp... | 11 records |
✅ Authoritative Response
Server:202.226.36.164
NS records: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp, ns5.xserver.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ptr2.jp (unsigned zone)
⏱️ Timing
Total: 805ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 202.226.37.132 |
| NS | 5 | ns2.xserver.jp, ns1.xserver.jp... |
| MX | 1 | ptr2.jp (pri: 0) |
| TXT | 1 | v=spf1 +a:sv112.xserver.jp +a:ptr2.jp +m |
| SOA | 1 | ns1.xserver.jp root.sv0.xserver.jp |
📌 Glue Records Collected
Total: 11
Out-of-bailiwick: 11 (ns1.xserver.jp, ns1.xserver.jp, ns1.xserver.jp...)
Analysis
Mail Server Role
The MX record for ptr2.jp points back to ptr2.jp — it is its own mail server.
IP Addresses
ptr2.jp directs to one IP number, which is 202.226.37.132.
Among the host names that share IP numbers with ptr2.jp are www.tkreo.com, ai31.jp, pandeiro.jp and two others.
Name Servers
The authoritative name servers for ptr2.jp are ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp and two others.
ptr2.jp partially shares its NS delegation with several other domains, including minako-design.com, umikyo.com, goro-nyan.com and two others.
These name servers are regularly seen alongside ns4.xserver.jp and ns5.xserver.jp as name servers.
Hosts with three IP address records:
The hostname ns1.xserver.jp points to 202.226.36.164, 202.226.36.170 and 202.226.36.246.
The hostname ns4.xserver.jp points to 183.90.224.226, 183.90.224.230 and 202.226.39.247.
The hostname ns5.xserver.jp points to 157.112.182.218, 157.112.182.220 and 202.226.37.247.
Hosts that resolve to one IP address:
The hostname ns2.xserver.jp resolves to 35.72.43.26.
The hostname ns3.xserver.jp resolves to 202.226.36.247.
Mail Servers
The MX record for ptr2.jp points to a single mail server: ptr2.jp.
ptr2.jp carries a single IP number, which is 202.226.37.132.