`core-concept.co.jp`

DNSSEC	⚠️ Not signed
A	153.123.7.70^{🇯🇵 AS131921153.123.6.0/23 GMO GlobalSign Holdings K.K.}
		PTR	`sv105.wadax-sv.jp`
NS	`sv105.wadax-sv.jp` ⭐
		A	153.123.7.70^{🇯🇵 AS131921153.123.6.0/23 GMO GlobalSign Holdings K.K.}
			PTR	`sv105.wadax-sv.jp`
NS	`nssv101.wadax-sv.jp`
		A	202.234.155.198^{🇯🇵 IDC202.234.155.0/24 Frontier Inc.}
MX	`sva102.wadax-sv.jp` ⭐
		A	153.123.7.19^{🇯🇵 AS131921153.123.6.0/23 GMO GlobalSign Holdings K.K.}
			PTR	`sva102.wadax-sv.jp`
TXT	`v=spf1 +ip4:153.123.7.70 +include:_spf-sd.wadax-sv.jp ~all`
SOA	`sv105.wadax-sv.jp`postmaster@core-concept.co.jp 2023-10-24 #2

`co.jp`

	DNSSEC	⚠️ Not signed
	TXT	`co.jp.`

WOT: SAFE (58/100)

Previously NS for

core-concept.co.jp

Same first word

core-concept.co.jp

core-concept.net

core-concept.be

DNS History

9 records (4 active, 5 former)

○NScore-concept.co.jp2015-06-01 → 2017-04-01 · 4 obs

● 2015-06-01 03:42:36
● 2017-04-01 12:43:00
○ 2026-04-06 16:58:38
○ 2026-04-13 07:46:54

○NSdns101.wadax.ne.jp2015-06-01 → 2017-04-01 · 4 obs

● 2015-06-01 03:42:36
● 2017-04-01 12:43:00
○ 2026-04-06 16:58:38
○ 2026-04-13 07:46:54

●NSnssv101.wadax-sv.jp2026-04-06 → 2026-04-13 · 3 obs

○ 2017-04-01 12:43:00
● 2026-04-06 16:58:38
● 2026-04-13 07:46:54

●NSsv105.wadax-sv.jp2026-04-06 → 2026-04-13 · 3 obs

○ 2017-04-01 12:43:00
● 2026-04-06 16:58:38
● 2026-04-13 07:46:54

○NSsv106.wadax.ne.jp2015-06-01 → 2017-04-01 · 4 obs

● 2015-06-01 03:42:36
● 2017-04-01 12:43:00
○ 2026-04-06 16:58:38
○ 2026-04-13 07:46:54

○MXah102.wadax.ne.jp2015-06-01 → 2017-04-01 · 4 obs

● 2015-06-01 03:42:36
● 2017-04-01 12:43:00
○ 2026-04-06 16:58:38
○ 2026-04-13 07:46:54

●MXsva102.wadax-sv.jp2026-04-06 → 2026-04-13 · 3 obs

○ 2017-04-01 12:43:00
● 2026-04-06 16:58:38
● 2026-04-13 07:46:54

●A153.123.7.702026-04-06 → 2026-04-13 · 3 obs

○ 2017-04-01 12:43:00
● 2026-04-06 16:58:38
● 2026-04-13 07:46:54

○A211.1.224.762015-06-01 → 2017-04-01 · 4 obs

● 2015-06-01 03:42:36
● 2017-04-01 12:43:00
○ 2026-04-06 16:58:38
○ 2026-04-13 07:46:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
core-concept.co.jp	nssv101.wadax-sv.jp, sv105.wadax-sv.jp	-

✅ Authoritative Response

Server:202.234.155.198

NS records: nssv101.wadax-sv.jp, sv105.wadax-sv.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for core-concept.co.jp (unsigned zone)

⏱️ Timing

Total: 1265ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`153.123.7.70`
NS	2	`nssv101.wadax-sv.jp, sv105.wadax-sv.jp`
MX	1	`sva102.wadax-sv.jp (pri: 10)`
TXT	1	`v=spf1 +ip4:153.123.7.70 +include:_spf-s`
SOA	1	`sv105.wadax-sv.jp postmaster.core-concep`

Analysis

IP Addresses

core-concept.co.jp resolves to one IP number: 153.123.7.70.

Other host names, for instance mail.eirakuya.net, matsumoto-denko.co.jp, faha.biz, kabnet.co.jp and msaa.jp share IP numbers with core-concept.co.jp.

Name Servers

core-concept.co.jp's delegation uses two name servers: nssv101.wadax-sv.jp and sv105.wadax-sv.jp.

core-concept.co.jp uses the same name server setup as other domains, such as yasumoto-jushi.co.jp, souzan.net, actel.jp, tokyo-kyoukasyo.co.jp and 2nd-gate.com.

core-concept.co.jp at least partially shares name servers with other domains, including sus-nissin.com, saisei-iryo.com, shinko-ltd.co.jp, jyukan.ac.jp and toku-yama.com.

These name servers are commonly used with sv117.wadax-sv.jp, sv119.wadax-sv.jp, sv104.wadax-sv.jp, sv124.wadax-sv.jp, sv122.wadax-sv.jp, sv108.wadax-sv.jp, sv123.wadax-sv.jp, sv112.wadax-sv.jp, sv109.wadax-sv.jp and sv102.wadax-sv.jp.

Host names with a single IP address: nssv101.wadax-sv.jp points to 202.234.155.198; sv105.wadax-sv.jp points to 153.123.7.70.

Mail Servers

A single mail server handles core-concept.co.jp, sva102.wadax-sv.jp.

core-concept.co.jp shares the same mail server setup as other domains, for instance rating-gate.com, kogencc.com, tomozawa.co.jp, h-hanazono.jp and s-algo.co.jp.

Host name sva102.wadax-sv.jp resolves to a single IP: 153.123.7.19.

core-concept.co.jp - robtex.com