`concentric.jp`

DNSSEC	⚠️ Not signed
A	198.202.211.1^{🇺🇸 CLOUDFLARESPECTRUM198.202.211.0/24 Webflow}
NS	`01.dnsv.jp` ⭐
		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`
		A	157.7.33.53^{🇯🇵 GMO-DNS157.7.33.0/24 GMO Internet,inc. Network-Team.}
			PTR	`02.dnsv.jp`
NS	`03.dnsv.jp`
		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	`04.dnsv.jp`
		A	2400:8500:3fff::53^{🇯🇵 GMO-DNS2400:8500:3fff::/48 GMO Internet,inc.}
			PTR	`04.dnsv.jp`
		A	157.7.35.53^{🇯🇵 GMO-DNS157.7.35.0/24 GMO Internet,inc. Network-Team.}
			PTR	`04.dnsv.jp`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c0b::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bj-in-f26.1e100.net`
		A	192.178.155.27^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`google-site-verification=sbcU36eiIeAw-G19k4cF9ZBvEvIFTc05YcUwcOS7hlw`
SOA	`01.dnsv.jp`hostmaster@dnsv.jp serial=1759044215

`jp`

	DNSSEC	🔒 Signed (DS record present)
	NS	`z.dns.jp` ⭐
	NS	`a.dns.jp`
	NS	`b.dns.jp`
	NS	`c.dns.jp`
	NS	`d.dns.jp`
	NS	`e.dns.jp`
	NS	`f.dns.jp`
	NS	`g.dns.jp`
	NS	`h.dns.jp`
	SOA	`z.dns.jp`root@dns.jp serial=1784908803

Same first word

Similar names

concertinc.com

rciconnect.es

ictconcern.com

rciconnect.pt

concnetric.net

rciconnect.com

centriccon.com

connectric.com

circonnect.com

ricconnect.com

DNS History

18 records (10 active, 8 former)

●NS01.dnsv.jp2026-07-02 → 2026-07-24 · 3 obs

○ 2020-01-20 20:09:16
● 2026-07-02 16:17:52
● 2026-07-24 17:03:46

●NS02.dnsv.jp2026-07-02 → 2026-07-24 · 3 obs

○ 2020-01-20 20:09:16
● 2026-07-02 16:17:52
● 2026-07-24 17:03:46

●NS03.dnsv.jp2026-07-02 → 2026-07-24 · 3 obs

○ 2020-01-20 20:09:16
● 2026-07-02 16:17:52
● 2026-07-24 17:03:46

●NS04.dnsv.jp2026-07-02 → 2026-07-24 · 3 obs

○ 2020-01-20 20:09:16
● 2026-07-02 16:17:52
● 2026-07-24 17:03:46

○NSns1.in-plus.jp2015-08-16 → 2016-07-18 · 4 obs

● 2015-08-16 21:14:12
● 2016-07-18 23:05:30
○ 2017-03-14 20:32:20
○ 2026-07-24 17:03:46

○NSns1.shsvr.net2017-03-14 → 2020-01-20 · 5 obs

○ 2016-07-18 23:05:30
● 2017-03-14 20:32:20
● 2020-01-20 20:09:16
○ 2026-07-02 16:17:52
○ 2026-07-24 17:03:46

○NSns2.in-plus.jp2015-08-16 → 2016-07-18 · 4 obs

● 2015-08-16 21:14:12
● 2016-07-18 23:05:30
○ 2017-03-14 20:32:20
○ 2026-07-24 17:03:46

○NSns2.shsvr.net2017-03-14 → 2020-01-20 · 5 obs

○ 2016-07-18 23:05:30
● 2017-03-14 20:32:20
● 2020-01-20 20:09:16
○ 2026-07-02 16:17:52
○ 2026-07-24 17:03:46

●MXalt1.aspmx.l.google.com2026-07-02 → 2026-07-24 · 3 obs

○ 2020-01-20 20:09:16
● 2026-07-02 16:17:52
● 2026-07-24 17:03:46

●MXalt2.aspmx.l.google.com2026-07-02 → 2026-07-24 · 3 obs

○ 2020-01-20 20:09:16
● 2026-07-02 16:17:52
● 2026-07-24 17:03:46

●MXalt3.aspmx.l.google.com2026-07-02 → 2026-07-24 · 3 obs

○ 2020-01-20 20:09:16
● 2026-07-02 16:17:52
● 2026-07-24 17:03:46

●MXalt4.aspmx.l.google.com2026-07-02 → 2026-07-24 · 3 obs

○ 2020-01-20 20:09:16
● 2026-07-02 16:17:52
● 2026-07-24 17:03:46

●MXaspmx.l.google.com2026-07-02 → 2026-07-24 · 3 obs

○ 2020-01-20 20:09:16
● 2026-07-02 16:17:52
● 2026-07-24 17:03:46

○MXmx.concentric.jp2017-03-14 → 2020-01-20 · 5 obs

○ 2016-07-18 23:05:30
● 2017-03-14 20:32:20
● 2020-01-20 20:09:16
○ 2026-07-02 16:17:52
○ 2026-07-24 17:03:46

○MXqsmtp02.in-plus.jp2015-08-16 → 2016-07-18 · 4 obs

● 2015-08-16 21:14:12
● 2016-07-18 23:05:30
○ 2017-03-14 20:32:20
○ 2026-07-24 17:03:46

○A114.179.231.932015-08-16 → 2016-07-18 · 4 obs

● 2015-08-16 21:14:12
● 2016-07-18 23:05:30
○ 2017-03-14 20:32:20
○ 2026-07-24 17:03:46

●A198.202.211.12026-07-02 → 2026-07-24 · 3 obs

○ 2020-01-20 20:09:16
● 2026-07-02 16:17:52
● 2026-07-24 17:03:46

○A211.13.196.1402017-03-14 → 2020-01-20 · 5 obs

○ 2016-07-18 23:05:30
● 2017-03-14 20:32:20
● 2020-01-20 20:09:16
○ 2026-07-02 16:17:52
○ 2026-07-24 17:03:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	e.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp...	-
concentric.jp	01.dnsv.jp, 03.dnsv.jp, 02.dnsv.jp, 04.dnsv.jp	7 records

✅ Authoritative Response

Server:157.7.35.53

NS records: 01.dnsv.jp, 03.dnsv.jp, 02.dnsv.jp, 04.dnsv.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for concentric.jp (unsigned zone)

⏱️ Timing

Total: 1000ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`198.202.211.1`
NS	4	`01.dnsv.jp, 02.dnsv.jp...`
MX	5	`alt1.aspmx.l.google.com (pri: 5), alt2.aspmx.l.google.com (pri: 5)...`
TXT	1	`google-site-verification=sbcU36eiIeAw-G1`
SOA	1	`01.dnsv.jp hostmaster.dnsv.jp`

📌 Glue Records Collected

Total: 7

Out-of-bailiwick: 7 (04.dnsv.jp, 03.dnsv.jp, 02.dnsv.jp...)

Analysis

IP Addresses

concentric.jp points to a single IP number: 198.202.211.1.

Additional host names — m-is.com, roycgroup.com, caliza.co and two others — share IP numbers with concentric.jp.

Name Servers

concentric.jp has four authoritative name servers: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp and 04.dnsv.jp.

concentric.jp shares at least some of its name servers with other domains, including medical-re.co.jp, nissinfrozen-cp.com, app-os.com and two others.

Host names with two IP numbers:

01.dnsv.jp resolves to 157.7.32.53 and 2400:8500:3300::53.

03.dnsv.jp resolves to 157.7.34.53 and 2400:8500:3000::53.

04.dnsv.jp resolves to 157.7.35.53 and 2400:8500:3fff::53.

Host names pointing to a single IP address:

02.dnsv.jp resolves to 157.7.33.53.

Mail Servers

concentric.jp is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

concentric.jp shares mail servers — at least in part — with other domains, including lingua-learn.id, otium.tv, texaswinejournal.com and two others.

These mail servers are frequently used alongside mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 other.

Host names with two IP numbers:

aspmx.l.google.com resolves to 192.178.155.27 and 2607:f8b0:4004:c0b::1a.

alt1.aspmx.l.google.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com resolves to 172.253.116.26 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com resolves to 192.178.223.27 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com resolves to 172.253.157.27 and 2a00:1450:400c:c23::1a.