tsr.or.jp - robtex.com
tsr.or.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 162.43.105.148🇯🇵 XSERVER-AS162.43.0.0/17 XSERVER Inc. | ||||||
| PTR | sv807.xbiz.ne.jp | ||||||
| NS | kotetsu.alpha-lt.net ⭐ | ||||||
| A | 157.205.252.6🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object) | ||||||
| PTR | amdns01.alpha-mail.jp | ||||||
| NS | amdns03.alpha-mail.jp | ||||||
| A | 216.230.254.112🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| PTR | amdns03.alpha-mail.jp | ||||||
| NS | tsukuba.aics.ne.jp | ||||||
| A | 157.205.252.7🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object) | ||||||
| PTR | amdns02.alpha-mail.jp | ||||||
| MX | ampub01.alpha-mail.net ⭐ | ||||||
| A | 216.230.254.1🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| PTR | ampub01.alpha-mail.net | ||||||
| MX | ampub02.alpha-mail.net ⭐ | ||||||
| A | 216.230.254.2🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| PTR | ampub02.alpha-mail.net | ||||||
| MX | ampub03.alpha-mail.net ⭐ | ||||||
| A | 216.230.254.3🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| MX | ampub04.alpha-mail.net(50) | ||||||
| A | 216.230.254.4🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| PTR | ampub04.alpha-mail.net | ||||||
| TXT | v=spf1 ip4:157.205.202.0/24 ip4:157.205.203.128/25 ip4:216.230.250.0/24 ip4:2... | ||||||
| SOA | kotetsu.alpha-lt.netpostmaster@alpha-web.ne.jp 2025-08-09 #11 | ||||||
or.jp
| DNSSEC | ⚠️ Not signed | ||||||
| TXT | or.jp. | ||||||
WOT: SAFE (75/100)
Overview
or.jp is a second-level domain under Japan's country code top-level domain (.jp), reserved exclusively for non-profit and organizational entities. It is managed by Japan Registry Services Co., Ltd. (JPRS), the authoritative registry for all .jp domains.
Eligible Registrants
Registration is restricted to Japanese non-profit organizations, including:
- Foundations (財団法人) and associations (社団法人)
- Medical corporations, audit firms, and religious organizations
- NPOs (特定非営利活動法人) and special corporations
- Agricultural and consumer cooperatives
- International organizations and their Japanese branches
- Foreign government embassies and consulates in Japan
Generally, each organization may register only one or.jp domain.
DNS Infrastructure
The or.jp zone is served by Japan's robust DNS infrastructure:
- Nameservers: a.dns.jp through h.dns.jp (8 anycast servers)
- Primary SOA: z.dns.jp
- DNSSEC: Fully signed with validated chain of trust from root
- Registry: JPRS (Japan Registry Services)
The domain hosts hundreds of subdomains for Japanese nonprofits, NGOs, professional associations, and public-interest organizations.
Same first word
Similar names
DNS History
9 records (8 active, 1 former)
●NSamdns03.alpha-mail.jp2026-07-02 → 2026-07-04 · 3 obs
● 2026-07-02 04:06:20
● 2026-07-04 13:27:34
●NSkotetsu.alpha-lt.net2015-08-08 → 2026-07-04 · 2 obs
● 2026-07-04 13:27:34
●NStsukuba.aics.ne.jp2015-08-08 → 2026-07-04 · 2 obs
● 2026-07-04 13:27:34
●MXampub01.alpha-mail.net2015-08-08 → 2026-07-04 · 2 obs
● 2026-07-04 13:27:34
●MXampub02.alpha-mail.net2015-08-08 → 2026-07-04 · 2 obs
● 2026-07-04 13:27:34
●MXampub03.alpha-mail.net2015-08-08 → 2026-07-04 · 2 obs
● 2026-07-04 13:27:34
●MXampub04.alpha-mail.net2020-01-23 → 2026-07-04 · 3 obs
● 2020-01-23 01:30:30
● 2026-07-04 13:27:34
●A162.43.105.1482026-07-02 → 2026-07-04 · 3 obs
● 2026-07-02 04:06:20
● 2026-07-04 13:27:34
○A216.230.251.912015-08-08 → 2020-01-23 · 4 obs
● 2020-01-23 01:30:30
○ 2026-07-02 04:06:20
○ 2026-07-04 13:27:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | f.dns.jp, c.dns.jp, d.dns.jp, a.dns.jp... | - |
| tsr.or.jp | amdns03.alpha-mail.jp, kotetsu.alpha-lt.net, tsukuba.aics.ne.jp | 1 record |
✅ Authoritative Response
Server:216.230.254.112
NS records: amdns03.alpha-mail.jp, kotetsu.alpha-lt.net, tsukuba.aics.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for tsr.or.jp (unsigned zone)
⏱️ Timing
Total: 1418ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 162.43.105.148 |
| NS | 3 | tsukuba.aics.ne.jp, amdns03.alpha-mail.jp... |
| MX | 4 | ampub04.alpha-mail.net (pri: 50), ampub03.alpha-mail.net (pri: 10)... |
| TXT | 1 | v=spf1 ip4:157.205.202.0/24 ip4:157.205. |
| SOA | 1 | kotetsu.alpha-lt.net postmaster.alpha-we |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (amdns03.alpha-mail.jp)
Analysis
IP Addresses
tsr.or.jp points to a single IP number: 162.43.105.148.
Additional host names — medical-tt.co.jp, monoprodigm.co.jp, plust-vps03.plust.jp and two others — share IP numbers with tsr.or.jp.
Name Servers
DNS for tsr.or.jp is handled by three authoritative name servers: amdns03.alpha-mail.jp, kotetsu.alpha-lt.net and tsukuba.aics.ne.jp.
tsr.or.jp partially shares its NS delegation with several other domains, including pieason.com, grasp-n.co.jp, ws-manabi.com and two others.
amdns03.alpha-mail.jp, kotetsu.alpha-lt.net and tsukuba.aics.ne.jp all have one IP address each — amdns03.alpha-mail.jp directs to 216.230.254.112, kotetsu.alpha-lt.net directs to 157.205.252.6 and tsukuba.aics.ne.jp directs to 157.205.252.7.
Mail Servers
tsr.or.jp has four mail servers: ampub01.alpha-mail.net, ampub02.alpha-mail.net, ampub03.alpha-mail.net and ampub04.alpha-mail.net.
tsr.or.jp shares mail servers — at least in part — with other domains, including takiguchi-k.co.jp, pd-shop.com, kkinternet.co.jp and two others.
ampub01.alpha-mail.net, ampub02.alpha-mail.net, ampub03.alpha-mail.net and ampub04.alpha-mail.net each resolve to one IP address: ampub01.alpha-mail.net resolves to 216.230.254.1, ampub02.alpha-mail.net resolves to 216.230.254.2, ampub03.alpha-mail.net resolves to 216.230.254.3 and ampub04.alpha-mail.net resolves to 216.230.254.4.