`sigma-project.org`

DNSSEC	⚠️ Not signed
A	202.181.99.25^{🇯🇵 SAKURA-B202.181.96.0/20 (6/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
		PTR	`www305.sakura.ne.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	`sigma-project.org` ⭐
		A	202.181.99.25^{🇯🇵 SAKURA-B202.181.96.0/20 (6/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
			PTR	`www305.sakura.ne.jp`
TXT	`v=spf1 a:www305.sakura.ne.jp mx ~all`
SOA	`master.dns.ne.jp`tech@sakura.ad.jp 2025-10-25 #20

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1777194940

MX for

sigma-project.org

Same first word

sigma-project.com

sigma-project.ru

sigma-project.org

DNS History

14 records (5 active, 9 former)

○NSdns1.name-services.com2015-08-19 → 2017-04-09 · 4 obs

● 2015-08-19 11:19:30
● 2017-04-09 13:33:50
○ 2026-03-03 12:57:40
○ 2026-04-26 09:47:22

○NSdns2.name-services.com2015-08-19 → 2017-04-09 · 4 obs

● 2015-08-19 11:19:30
● 2017-04-09 13:33:50
○ 2026-03-03 12:57:40
○ 2026-04-26 09:47:22

○NSdns3.name-services.com2015-08-19 → 2017-04-09 · 4 obs

● 2015-08-19 11:19:30
● 2017-04-09 13:33:50
○ 2026-03-03 12:57:40
○ 2026-04-26 09:47:22

○NSdns4.name-services.com2015-08-19 → 2017-04-09 · 4 obs

● 2015-08-19 11:19:30
● 2017-04-09 13:33:50
○ 2026-03-03 12:57:40
○ 2026-04-26 09:47:22

○NSdns5.name-services.com2015-08-19 → 2017-04-09 · 4 obs

● 2015-08-19 11:19:30
● 2017-04-09 13:33:50
○ 2026-03-03 12:57:40
○ 2026-04-26 09:47:22

●NSmaster.dns.ne.jp2026-03-03 → 2026-04-26 · 3 obs

○ 2017-04-09 13:33:50
● 2026-03-03 12:57:40
● 2026-04-26 09:47:22

●NSns1.dns.ne.jp2026-03-03 → 2026-04-26 · 3 obs

○ 2017-04-09 13:33:50
● 2026-03-03 12:57:40
● 2026-04-26 09:47:22

●NSns2.dns.ne.jp2026-03-03 → 2026-04-26 · 3 obs

○ 2017-04-09 13:33:50
● 2026-03-03 12:57:40
● 2026-04-26 09:47:22

○MXeforwardct.name-services.com2015-08-19 → 2017-04-09 · 4 obs

● 2015-08-19 11:19:30
● 2017-04-09 13:33:50
○ 2026-03-03 12:57:40
○ 2026-04-26 09:47:22

○MXeforwardct2.name-services.com2015-08-19 → 2017-04-09 · 4 obs

● 2015-08-19 11:19:30
● 2017-04-09 13:33:50
○ 2026-03-03 12:57:40
○ 2026-04-26 09:47:22

○MXeforwardct3.name-services.com2015-08-19 → 2017-04-09 · 4 obs

● 2015-08-19 11:19:30
● 2017-04-09 13:33:50
○ 2026-03-03 12:57:40
○ 2026-04-26 09:47:22

●MXsigma-project.org2026-03-03 → 2026-04-26 · 3 obs

○ 2017-04-09 13:33:50
● 2026-03-03 12:57:40
● 2026-04-26 09:47:22

●A202.181.99.252026-03-03 → 2026-04-26 · 3 obs

○ 2017-04-09 13:33:50
● 2026-03-03 12:57:40
● 2026-04-26 09:47:22

○A203.189.105.1062015-08-19 → 2017-04-09 · 4 obs

● 2015-08-19 11:19:30
● 2017-04-09 13:33:50
○ 2026-03-03 12:57:40
○ 2026-04-26 09:47:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
sigma-project.org	ns2.dns.ne.jp, ns1.dns.ne.jp	-

✅ Authoritative Response

Server:61.211.236.1

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sigma-project.org (unsigned zone)

⏱️ Timing

Total: 439ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`202.181.99.25`
NS	2	`ns1.dns.ne.jp, ns2.dns.ne.jp`
MX	1	`sigma-project.org (pri: 10)`
TXT	1	`v=spf1 a:www305.sakura.ne.jp mx ~all`
SOA	1	`master.dns.ne.jp tech.sakura.ad.jp`

Analysis

Mail Server Role

sigma-project.org serves as the mail server for sigma-project.org.

IP Addresses

sigma-project.org points to a single IP number: 202.181.99.25.

Other host names, for instance play-pray.sakura.ne.jp, harui.biz, norihitohp.sakura.ne.jp, grooveon.jp and f-tes.com share IP numbers with sigma-project.org.

Name Servers

The domain sigma-project.org is delegated to three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.

sigma-project.org shares name servers with other domains at least partially, for instance cb-i.co.jp, toritsu-ec.co.jp, itoganka.com, kurabun.jp and eigo.to.

Host names with a single IP number:

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.

Mail Servers

A single mail server handles sigma-project.org and sigma-project.org.

Host name sigma-project.org resolves to IP 202.181.99.25.

sigma-project.org - robtex.com