sys.ac - dns.ninja

`sys.ac`

DNSSEC	⚠️ Not signed
A	153.126.142.66^{🇯🇵 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	`ns.sys.ac`
NS	`ns.sys.ac` ⭐
		A	153.126.142.66^{🇯🇵 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	`ns.sys.ac`
NS	`ns.duolife.net`
		A	140.227.124.200^{🇯🇵 InfoSphere140.227.0.0/16 INFOSPHERE}
			PTR	`140-227-124-200.indigo.static.arena.ne.jp`
MX	`sys.ac` ⭐
		A	153.126.142.66^{🇯🇵 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	`ns.sys.ac`
TXT	`v=spf1 mx ~all`
SOA	`ns.sys.ac`root@sys.ac 2023-05-19 #2

`ac`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.nic.ac` ⭐
	NS	`a2.nic.ac`
	NS	`b0.nic.ac`
	NS	`c0.nic.ac`
	SOA	`a0.nic.ac`hostmaster@donuts.email serial=1780871232

WOT: UNKNOWN (62/100)

MX for

sys.ac

Subdomains

ns.sys.ac

Same first word

sys.ltd

sys.net.nz

sys.js.cn

sys.guru

sys.ca

sys.com.gt

sys.de

sys.by

sys.dp.ua

sys.eu

sys.nu

sys.or.kr

sys.be

sys.com.ua

sys.ch

sys.ie

sys.one

sys.yt

sys.co.at

sys.sx

sys.solar

sys.as

sys.space

sys.ws

sys.com

sys.cool

sys.network

sys.org

sys.im

sys.cl

sys.codes

sys.biz

sys.red

sys.it.com

sys.co.kr

sys.mobi

sys.pub

sys.builders

sys.care

sys.academy

sys.email

sys.garden

sys.srv.br

sys.center

sys.ag

sys.lu

sys.hu

sys.ms

sys.kim

sys.zone

sys.ba

sys.schwarz

sys.dk

sys.net

sys.vn

sys.com.mx

sys.in

sys.pl

sys.com.co

sys.ge

sys.zapto.org

sys.nl

sys.co.il

sys.me

sys.co.nz

sys.host

sys.ac

sys.net.tw

sys.com.my

sys.us

sys.ro

sys.report

sys.gdn

sys.systems

sys.group

sys.bio

sys.bet

sys.life

sys.fm

sys.fi

sys.jp

sys.support

sys.no

sys.hi.cn

sys.computer

sys.cc

sys.se

sys.co.jp

sys.lv

sys.uz

sys.com.py

sys.co.tz

sys.ma

sys.si

sys.co

sys.edu.hk

sys.net.tr

sys.cat

sys.es

sys.sg

sys.ad

sys.com.tr

sys.bg

sys.com.pe

sys.eti.br

sys.zip

sys.net.ru

sys.team

sys.ph

sys.goiania.br

sys.mx

sys.rocks

sys.social

sys.hk

sys.run

sys.sale

sys.md

sys.lc

sys.gr

sys.com.au

sys.net.mx

sys.ee

sys.lt

sys.net.pl

sys.best

sys.tax

Similar names

yss.co.th

yss.ch

ssy.hu

ssy.es

ssy.co.uk

yss.es

yss.co.il

ssy.de

ssy.in

ssy.be

yss.com.au

yss.vn

ssy.me

ssy.cn

yss.it

yss.or.id

yss.ru

ssy.dk

ssy.org

yss.co.jp

ssy.net

ssy.org.tw

ssy.ch

yss.pl

yss.ne.jp

yss.or.kr

yss.nl

ssy.cl

ssy.im

ssy.eu

yss.fr

yss.de

ssy.sakura.ne.jp

yss.fi

ssy.onl

ssy.gob.mx

yss.se

yss.in

ssy.cc

ssy.pl

yss.com.br

yss.sg

yss.kr

ssy.ru

yss.cz

yss.co

ssy.co

yss.com.ua

ssy.com

yss.org

ssy.co.jp

ssy.mobi

ssy.cn.com

ssy.co.kr

ssy.us

ssy.asia

yss.no

yss.tv

yss.com.tr

yss.co.za

yss.info

yss.su

yss.ca

yss.mobi

yss.cn

yss.ac.th

yss.net

ssy.su

DNS History

6 records (4 active, 2 former)

●NSns.duolife.net2026-02-23 → 2026-06-07 · 2 obs

● 2026-02-23 12:46:54
● 2026-06-07 22:32:14

●NSns.sys.ac2026-02-23 → 2026-06-07 · 2 obs

● 2026-02-23 12:46:54
● 2026-06-07 22:32:14

○MXmail.sys.ac2008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 05:38:48
○ 2015-08-01 12:54:06
○ 2026-06-07 22:32:14

●MXsys.ac2026-02-23 → 2026-06-07 · 3 obs

○ 2015-08-01 12:54:06
● 2026-02-23 12:46:54
● 2026-06-07 22:32:14

●A153.126.142.662026-02-23 → 2026-06-07 · 3 obs

○ 2015-08-01 12:54:06
● 2026-02-23 12:46:54
● 2026-06-07 22:32:14

○A210.143.111.1562008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 05:38:48
○ 2015-08-01 12:54:06
○ 2026-06-07 22:32:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ac	a2.nic.ac, c0.nic.ac, a0.nic.ac, b0.nic.ac	8 records
sys.ac	ns.duolife.net, ns.sys.ac	1 record

✅ Authoritative Response

Server:153.126.142.66

NS records: ns.duolife.net, ns.sys.ac

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sys.ac (unsigned zone)

⏱️ Timing

Total: 1339ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`153.126.142.66`
NS	2	`ns.sys.ac, ns.duolife.net`
MX	1	`sys.ac (pri: 10)`
TXT	1	`v=spf1 mx ~all`
SOA	1	`ns.sys.ac root.sys.ac`

📌 Glue Records Collected

Total: 9

In-bailiwick: 9 (c0.nic.ac, b0.nic.ac, a2.nic.ac...)

Analysis

Hierarchy

ns.sys.ac is a subdomain of sys.ac.

Mail Server Role

The MX record for sys.ac points back to sys.ac — it is its own mail server.

IP Addresses

sys.ac directs to one IP number, which is 153.126.142.66.

mail.hattori-photo.co.jp, hinomo.com, ns.sys.ac and www.hinomo.com are examples of host names that share IP numbers with sys.ac.

Name Servers

Two name servers handle the delegation for sys.ac: ns.sys.ac and ns.duolife.net.

sys.ac delegates to the same name servers as other domains, duolife.net among them.

The name servers of sys.ac overlap at least partially with those of other domains — among them axisweb.co.jp, cafe-avant.com, hinomo.com and two more.

These name servers are routinely co-deployed with the name servers www.cafe-avant.com, ns.axisweb.co.jp, ns.system-factory.info and two others.

Both ns.sys.ac and ns.duolife.net have a single IP address each — ns.sys.ac resolves to 153.126.142.66 while ns.duolife.net resolves to 140.227.124.200.

Mail Servers

The MX record for sys.ac points to a single mail server: sys.ac.

sys.ac carries a single IP number, which is 153.126.142.66.