sei-con.com - dns.ninja

`sei-con.com`

DNSSEC	⚠️ Not signed
NS	`ns1.xserver.jp` ⭐ ⚠️ Not in zone NS records
		A	202.226.36.164^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
		A	202.226.36.170^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
		A	202.226.36.246^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
			PTR	`ns1.xserver.jp`
NS	`01.dnsv.jp` ⚠️ Not in zone NS records
		A	2400:8500:3300::53^{🇯🇵 GMO-DNS2400:8500:3300::/48 GMO Internet,inc.}
			PTR	`01.dnsv.jp`
		A	157.7.32.53^{🇯🇵 GMO-DNS157.7.32.0/24 GMO Internet,inc. Network-Team.}
			PTR	`01.dnsv.jp`
NS	`02.dnsv.jp` ⚠️ Not in zone NS records
		A	157.7.33.53^{🇯🇵 GMO-DNS157.7.33.0/24 GMO Internet,inc. Network-Team.}
			PTR	`02.dnsv.jp`
NS	`03.dnsv.jp` ⚠️ Not in zone NS records
		A	2400:8500:3000::53^{🇯🇵 GMO-DNS2400:8500:3000::/48 GMO Internet,inc.}
			PTR	`03.dnsv.jp`
		A	157.7.34.53^{🇯🇵 GMO-DNS157.7.34.0/24 GMO Internet,inc. Network-Team.}
			PTR	`03.dnsv.jp`
NS	`ns2.xserver.jp` ⚠️ Not in zone NS records
		A	35.72.43.26^{🇯🇵 Amazon35.72.0.0/13 EC2 NRT prefix}
			PTR	`ns2.xserver.jp`
SOA	`ns1.xserver.jp`root@sv0.xserver.jp serial=0

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1786309384

MX for

sei-con.com

Same first word

sei-con.com

Similar names

so-nice.ru

e-coins.top

e-sonic.cn

oes-inc.com

so-nice.ch

sie-con.eu

neo-sci.com

so-nice.ca

e-coins.su

eco-ins.com

e-coins.nl

e-sonic.ca

c-noise.net

sie-con.de

e-sonic.ro

c-noise.jp

sino-ec.com

e-sonic.net

seo-inc.ru

incos-e.com

e-sonic.co.jp

so-nice.jp

ce-sion.com

esn-ico.com

i-cones.com

coins-e.appspot.com

ei-cons.com

nic-seo.ru

e-coins.com

e-coins.ch

sin-eco.com

sonic-e.com

e-coins.in

ne-scio.com

oni-sec.com

e-coins.org

neis-co.com

so-nice.com.tw

sien-co.myshopify.com

soe-inc.com

seo-inc.org

coins-e.com

e-sonic.com

DNS History

12 records (5 active, 7 former)

●NS01.dnsv.jp2015-06-06 → 2026-08-09 · 2 obs

● 2015-06-06 00:17:14
● 2026-08-09 21:16:50

●NS02.dnsv.jp2015-06-06 → 2026-08-09 · 5 obs

● 2015-06-06 00:17:14
● 2015-10-25 20:45:04
○ 2016-01-14 09:18:38
● 2016-04-02 02:15:30
● 2026-08-09 21:16:50

●NS03.dnsv.jp2015-06-06 → 2026-08-09 · 5 obs

● 2015-06-06 00:17:14
● 2015-10-25 20:45:04
○ 2016-01-14 09:18:38
● 2016-04-02 02:15:30
● 2026-08-09 21:16:50

○NS04.dnsv.jp2015-06-06 → 2016-11-25 · 7 obs

● 2015-06-06 00:17:14
● 2015-10-25 20:45:04
○ 2016-01-14 09:18:38
● 2016-04-02 02:15:30
● 2016-11-25 17:33:50
○ 2026-02-19 19:52:08
○ 2026-08-09 21:16:50

●NSns1.xserver.jp2015-10-25 → 2026-08-09 · 3 obs

○ 2015-06-06 00:17:14
● 2015-10-25 20:45:04
● 2026-08-09 21:16:50

●NSns2.xserver.jp2016-01-14 → 2026-08-09 · 6 obs

○ 2015-10-25 20:45:04
● 2016-01-14 09:18:38
○ 2016-04-02 02:15:30
○ 2016-11-25 17:33:50
● 2026-02-19 19:52:08
● 2026-08-09 21:16:50

○NSns3.xserver.jp2016-01-14 → 2026-03-01 · 9 obs

○ 2015-10-25 20:45:04
● 2016-01-14 09:18:38
○ 2016-04-02 02:15:30
○ 2016-11-25 17:33:50
● 2026-02-19 19:52:08
○ 2026-02-21 12:33:20
● 2026-03-01 06:10:38
○ 2026-08-09 18:09:42
○ 2026-08-09 21:16:50

○NSns4.xserver.jp2016-01-14 → 2026-03-01 · 9 obs

○NSns5.xserver.jp2016-01-14 → 2026-03-01 · 9 obs

○MXsei-con.com2016-01-14 → 2026-06-23 · 10 obs

● 2016-01-14 09:18:38
● 2016-04-02 02:15:30
○ 2016-11-25 17:33:50
● 2026-02-19 19:52:08
○ 2026-02-21 12:33:20
● 2026-03-01 06:10:38
● 2026-03-29 08:37:30
○ 2026-03-30 16:47:22
● 2026-06-23 04:07:36
○ 2026-08-09 21:16:50

○A202.226.37.402026-02-19 → 2026-06-29 · 7 obs

○ 2016-04-02 02:15:30
● 2026-02-19 19:52:08
● 2026-03-29 08:37:30
○ 2026-03-30 16:47:22
● 2026-06-29 08:02:54
○ 2026-08-09 18:09:42
○ 2026-08-09 21:16:50

○A210.188.201.402016-01-14 → 2016-01-14 · 3 obs

● 2016-01-14 09:18:38
○ 2016-04-02 02:15:30
○ 2026-08-09 21:16:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
sei-con.com	ns1.xserver.jp, ns2.xserver.jp, 01.dnsv.jp, 02.dnsv.jp...	-

✅ Authoritative Response

Server:35.72.43.26

NS records: ns1.xserver.jp, ns2.xserver.jp, 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sei-con.com (unsigned zone)

⏱️ Timing

Total: 2221ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`202.226.37.40`
NS	5	`ns1.xserver.jp, ns3.xserver.jp...`
MX	1	`sei-con.com (pri: 0)`
SOA	1	`ns1.xserver.jp root.sv0.xserver.jp`

Analysis

Mail Server Role

sei-con.com acts as its own mail server.

Name Servers

Delegation for sei-con.com is to five name servers: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp and two others.

sei-con.com has at least partial name server overlap with other domains, such as optical-processing-and-networking.com, sideplan.net, diolabo.com and two others.

04.dnsv.jp, ns1.xserver.jp and ns2.xserver.jp — plus 3 other name servers — are commonly paired with these name servers.

Host names with three IP numbers:

ns1.xserver.jp maps to three IP addresses: 202.226.36.164, 202.226.36.170 and 202.226.36.246.

Host names with two IP numbers:

The A records for 01.dnsv.jp return 157.7.32.53 and 2400:8500:3300::53.

The A records for 03.dnsv.jp return 157.7.34.53 and 2400:8500:3000::53.

Host names pointing to a single IP address:

02.dnsv.jp resolves to the IP address 157.7.33.53.

ns2.xserver.jp resolves to the IP address 35.72.43.26.