rubycon.co.jp - dns.ninja

`rubycon.co.jp`

DNSSEC	⚠️ Not signed
A	162.43.107.124^{🇯🇵 XSERVER-AS162.43.0.0/17 XSERVER Inc.}
		PTR	`sv6103.wpx.ne.jp`
NS	`ns1.hs.ctc.jp` ⭐
NS	`ns2.dc.ctc.ad.jp`
		A	2001:f58:10:1001::102^{🇯🇵 CTCX2001:f58::/32 Chubu Telecommunications Company, Inc. Sakae 2-2-5, Naka-ku, Nagoya-shi, 460-0008 JAPAN}
			PTR	`ns2.dc.ctc.ad.jp`
		A	218.216.176.115^{🇯🇵 CTCX218.216.176.0/24 Chubu Telecommunications Company, Inc.}
			PTR	`ns2.dc.ctc.ad.jp`
NS	`ns3.ctc.jp`
		A	2406:da14:463:7801:dbb3:ecb4:d989:e9bc^{🇯🇵 Amazon2406:da14:400::/38 AMAZON AWS}
		A	13.230.125.104^{🇯🇵 Amazon13.230.0.0/15 EC2 NRT prefix}
			PTR	`ns3.ctc.jp`
MX	`rubycon-co-jp.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:cc1a::1^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-ty3p286cu00101.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1a::2^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-tyvp286cu00302.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1f::^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-os9p286cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:cc24::^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-os0p286cu01300.inbound.protection.outlook.com`
		A	52.101.124.1^{🇯🇵 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ty3p286cu00101.inbound.protection.outlook.com`
		A	52.101.124.6^{🇯🇵 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-tyvp286cu00206.inbound.protection.outlook.com`
		A	52.101.157.10^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-os0p286cu01302.inbound.protection.outlook.com`
		A	52.101.157.11^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-os0p286cu01203.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.mta.hdems.com include:spf.protection.outlook.com ~all`
TXT	`MS=ms38628708`
TXT	`seculio-domain-verification-code=3506cb14cefa6eac33db1d46ca773016d3de3b72cb61...`
TXT	`google-gws-recovery-domain-verification=72056258`
SOA	`ns1.hs.ctc.jp`rubycon@rubycon.co.jp 2026-06-11 #0

`co.jp`

	DNSSEC	⚠️ Not signed
	TXT	`co.jp.`

rank #155535 globally
rank #2769 in the tld
WOT: SAFE (78/100)
📈 Tranco rank: #610,698
WOT: SAFE (58/100)

Subdomains

rubynt5.rubycon.co.jp

Same first word

rubycon.co.jp

rubycon.us

rubycon.it

rubycon.info

rubycon.org

rubycon.com

rubycon.co.uk

Similar names

yourcnb.com

cybourn.com

yourcnb.info

conurby.com

yournbc.com

cornbuy.com

DNS History

8 records (5 active, 3 former)

●NSns1.hs.ctc.jp2026-05-03 → 2026-06-25 · 3 obs

○ 2026-03-18 13:38:50
● 2026-05-03 18:14:02
● 2026-06-25 11:39:20

●NSns2.dc.ctc.ad.jp2015-06-20 → 2026-06-25 · 3 obs

○ 2008-11-28 01:30:04
● 2015-06-20 07:48:24
● 2026-06-25 11:39:20

●NSns3.ctc.jp2026-05-03 → 2026-06-25 · 3 obs

○ 2026-03-18 13:38:50
● 2026-05-03 18:14:02
● 2026-06-25 11:39:20

○NSrubynt5.rubycon.co.jp2015-06-20 → 2026-03-18 · 5 obs

○ 2008-11-28 01:30:04
● 2015-06-20 07:48:24
● 2026-03-18 13:38:50
○ 2026-05-03 18:14:02
○ 2026-06-25 11:39:20

●MXrubycon-co-jp.mail.protection.outlook.com2026-03-18 → 2026-06-25 · 3 obs

○ 2017-05-17 03:15:32
● 2026-03-18 13:38:50
● 2026-06-25 11:39:20

○MXrubynt8.rubycon.co.jp2015-06-20 → 2017-05-17 · 5 obs

○ 2008-11-28 01:30:04
● 2015-06-20 07:48:24
● 2017-05-17 03:15:32
○ 2026-03-18 13:38:50
○ 2026-06-25 11:39:20

●A162.43.107.1242026-03-18 → 2026-06-25 · 3 obs

○ 2017-05-17 03:15:32
● 2026-03-18 13:38:50
● 2026-06-25 11:39:20

○A203.129.125.1312015-06-20 → 2017-05-17 · 5 obs

○ 2008-11-28 01:30:04
● 2015-06-20 07:48:24
● 2017-05-17 03:15:32
○ 2026-03-18 13:38:50
○ 2026-06-25 11:39:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
rubycon.co.jp	ns1.hs.ctc.jp, ns3.ctc.jp, ns2.dc.ctc.ad.jp	2 records

✅ Authoritative Response

Server:218.216.179.154

NS records: ns1.hs.ctc.jp, ns3.ctc.jp, ns2.dc.ctc.ad.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rubycon.co.jp (unsigned zone)

⏱️ Timing

Total: 1578ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`162.43.107.124`
NS	3	`ns1.hs.ctc.jp, ns2.dc.ctc.ad.jp...`
MX	1	`rubycon-co-jp.mail.protection.outlook.co`
TXT	4	`MS=ms38628708, google-gws-recovery-domain-verification=...`
SOA	1	`ns1.hs.ctc.jp rubycon.rubycon.co.jp`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns3.ctc.jp, ns3.ctc.jp)

Analysis

Hierarchy

rubynt5.rubycon.co.jp is a subdomain of rubycon.co.jp.

IP Addresses

rubycon.co.jp resolves to just one IP address, 162.43.107.124.

Two other host names, along with www.ayako-uehara.com, 123store.jp and fireking-japan.net, also share IP numbers with rubycon.co.jp.

Name Servers

rubycon.co.jp is served by three name servers: ns3.ctc.jp, ns1.hs.ctc.jp and ns2.dc.ctc.ad.jp.

The name servers of rubycon.co.jp overlap at least partially with those of other domains — among them besnavi.com, takitomi.co.jp, zoo.co.jp and two more.

These name servers commonly appear alongside the name servers ns0.dc.ctc.ad.jp and dns-x.sinet.ad.jp.

ns3.ctc.jp resolves to 13.230.125.104 and 2406:da14:463:7801:dbb3:ecb4:d989:e9bc. Likewise, ns2.dc.ctc.ad.jp resolves to 218.216.176.115 and 2001:f58:10:1001::102 — two IP addresses apiece.

Mail Servers

The sole mail server for rubycon.co.jp is rubycon-co-jp.mail.protection.outlook.com.

With 8 IP addresses total, rubycon-co-jp.mail.protection.outlook.com resolves to 52.101.124.1, 52.101.124.6, 52.101.157.10 and 5 others.