tsk.or.jp - dns.ninja

`tsk.or.jp`

DNSSEC	⚠️ Not signed
A	153.126.139.167^{🇯🇵 SAKURA-A153.126.128.0/17 (ISHIKARI) SAKURA Internet // HOKKAIDO JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan}
		PTR	`www2.tsk.or.jp`
NS	`master.dns.ne.jp` ⭐
		A	210.224.172.18^{🇯🇵 SAKURA-C210.224.160.0/19 (1/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
			PTR	`master.dns.ne.jp`
NS	`ns1.dns.ne.jp`
		A	61.211.236.1^{🇯🇵 SAKURA-B61.211.236.0/24 (4/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
			PTR	`ns1.dns.ne.jp`
NS	`ns2.dns.ne.jp`
		A	133.167.21.1^{🇯🇵 SAKURA-C133.167.21.0/24 (OSAKA) SAKURA Internet // WEST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan}
			PTR	`ns2.dns.ne.jp`
MX	`tskmail.sakura.ne.jp` ⭐
		A	112.78.112.174^{🇯🇵 SAKURA-C112.78.112.0/20 (4/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
			PTR	`www1834.sakura.ne.jp`
TXT	`v=spf1 +a:www1834.sakura.ne.jp mx +a:www2.tsk.or.jp +ip4:112.78.112.174/32 in...`
TXT	`google-site-verification=N_YN5Q2rHWH-rhei4qaFH9kxsl_k2ISUgEeLOi18GNQ`
TXT	`_globalsign-domain-verification=G5Zns8ygsbL7yL9Nw9QtUujQdFGDxVafZrGAP9ESMv`
SOA	`master.dns.ne.jp`tech@sakura.ad.jp 2026-03-23 #3

`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.

PTR for

180.170.117.221.in-addr.arpa

Subdomains

www1.tsk.or.jp

studyintokyo.tsk.or.jp

www2.tsk.or.jp

Same first word

tsk.pl

tsk.es

tsk.com

tsk.eu

tsk.be

tsk.clinic

tsk.io

tsk.net

tsk.dk

tsk.com.ua

tsk.by

tsk.org.se

tsk.se

tsk.fi

tsk.ne.jp

tsk.biz

tsk.kz

tsk.it

tsk.co

tsk.si

tsk.ca

tsk.me

tsk.com.mx

tsk.fo

tsk.co.in

tsk.ua

tsk.ru

tsk.spb.ru

tsk.iki.fi

tsk.tr

tsk.cz

tsk.li

tsk.tw

tsk.company

tsk.ninja

tsk.co.za

tsk.lt

tsk.asia

tsk.nu

tsk.lol

tsk.or.kr

tsk.co.ir

tsk.info

tsk.com.es

tsk.edu.kw

tsk.support

tsk.xyz

tsk.rs

tsk.in

tsk.ch

tsk.or.jp

tsk.at

tsk.nl

tsk.edu.hk

tsk.co.kr

tsk.jp

tsk.sk

tsk.de

Similar names

kst.cz

tks.red

kst.by

tks.su

kst.mx

tks.de

stk.im

tks.sg

kts.group

skt.co.in

skt.as

kst.waw.pl

kts.ac.kr

kts.me

kst.net.pl

kst.co

kst.support

skt.com.cn

kst.gr

tks.com.ar

kst.com.mx

stk.de

kts.studio

stk.cz

tks.at

kst.tv

tks.jp

stk.agency

tks.ie

kst.se

skt.com.tr

kst.or.kr

kst.at

skt.cl

tks.net.pl

kts.se

skt.solutions

kst.sk

kts.hu

skt.com.au

tks.co.at

stk.co.za

kts.us

tks.org

kst.vn

tks.ru

tks.nl

stk.sk

kst.ch

kts.org.ua

tks.co.th

kst.net.vn

stk.wiki

kst.im

stk.or.jp

stk.ir

skt.com.ru

tks.ro

stk.nl

tks.it

kst.fr

skt.ac.tz

tks.com.br

stk.ooo

kst.com

stk.no

kts.fr

kts.my

kst.kr

stk.dk

tks.ind.br

tks.katowice.pl

kts.co.at

tks.edu.hk

tks.net

stk.be

tks.to

stk.st

kst.biz

tks.si

kts.co.in

kts.info

kst.gmbh

tks.me

skt.my

kts.com.pe

DNS History

9 records (5 active, 4 former)

●NSmaster.dns.ne.jp2026-02-21 → 2026-07-30 · 3 obs

○ 2016-12-19 11:20:36
● 2026-02-21 16:16:00
● 2026-07-30 19:44:12

●NSns1.dns.ne.jp2026-02-21 → 2026-07-30 · 3 obs

○ 2016-12-19 11:20:36
● 2026-02-21 16:16:00
● 2026-07-30 19:44:12

○NSns1.oftech.co.jp2015-08-12 → 2016-12-19 · 4 obs

● 2015-08-12 01:00:00
● 2016-12-19 11:20:36
○ 2026-02-21 16:16:00
○ 2026-07-30 19:44:12

●NSns2.dns.ne.jp2026-02-21 → 2026-07-30 · 3 obs

○ 2016-12-19 11:20:36
● 2026-02-21 16:16:00
● 2026-07-30 19:44:12

○NSns2.oftech.co.jp2015-08-12 → 2016-12-19 · 4 obs

● 2015-08-12 01:00:00
● 2016-12-19 11:20:36
○ 2026-02-21 16:16:00
○ 2026-07-30 19:44:12

○MXsgate.tsk.or.jp2015-08-12 → 2016-12-19 · 4 obs

● 2015-08-12 01:00:00
● 2016-12-19 11:20:36
○ 2026-02-21 16:16:00
○ 2026-07-30 19:44:12

●MXtskmail.sakura.ne.jp2026-02-21 → 2026-07-30 · 3 obs

○ 2016-12-19 11:20:36
● 2026-02-21 16:16:00
● 2026-07-30 19:44:12

○A121.83.250.1212015-08-12 → 2016-12-19 · 4 obs

● 2015-08-12 01:00:00
● 2016-12-19 11:20:36
○ 2026-02-21 16:16:00
○ 2026-07-30 19:44:12

●A153.126.139.1672026-02-21 → 2026-07-30 · 3 obs

○ 2016-12-19 11:20:36
● 2026-02-21 16:16:00
● 2026-07-30 19:44:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	c.dns.jp, e.dns.jp, g.dns.jp, a.dns.jp...	-
tsk.or.jp	ns1.dns.ne.jp, ns2.dns.ne.jp	2 records

✅ Authoritative Response

Server:133.167.21.1

NS records: ns1.dns.ne.jp, ns2.dns.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tsk.or.jp (unsigned zone)

⏱️ Timing

Total: 1156ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`153.126.139.167`
NS	2	`ns1.dns.ne.jp, ns2.dns.ne.jp`
MX	1	`tskmail.sakura.ne.jp (pri: 10)`
TXT	3	`v=spf1 +a:www1834.sakura.ne.jp mx +a:www, google-site-verification=N_YN5Q2rHWH-rhe...`
SOA	1	`master.dns.ne.jp tech.sakura.ad.jp`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns2.dns.ne.jp, ns1.dns.ne.jp)

Analysis

Hierarchy

tsk.or.jp sits above www1.tsk.or.jp, studyintokyo.tsk.or.jp and www2.tsk.or.jp in the domain hierarchy.

IP Addresses

tsk.or.jp resolves to one IP address: 153.126.139.167.

Host names like www2.tsk.or.jp are further examples that share IP numbers with tsk.or.jp.

Name Servers

tsk.or.jp carries NS records delegating to master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.

There is at least partial name server overlap between tsk.or.jp and other domains — u-l.jp, solado.jp, avfan.org and two more among them.

These name servers are routinely deployed together with the name servers dns.sakura.ad.jp.

master.dns.ne.jp points to 210.224.172.18; ns1.dns.ne.jp points to 61.211.236.1; ns2.dns.ne.jp points to 133.167.21.1 — each hostname maps to exactly one IP address.

Mail Servers

Mail for tsk.or.jp is handled by a single mail server, tskmail.sakura.ne.jp.

The mail server configuration of tsk.or.jp is identical to that of other domains — tskmail.sakura.ne.jp being one example.

tskmail.sakura.ne.jp carries a single IP number, which is 112.78.112.174.