`tcb-system.com`

DNSSEC	⚠️ Not signed
A	18.179.167.7^{🇯🇵 Amazon18.179.0.0/16 EC2 NRT prefix}
		PTR	`ec2-18-179-167-7.ap-northeast-1.compute.amazonaws.com`
A	52.199.60.79^{🇯🇵 Amazon52.196.0.0/14 EC2 NRT prefix}
NS	`dns01.muumuu-domain.com` ⭐
		A	202.239.23.39^{🇯🇵 IDC202.239.23.0/24 Frontier Inc.}
			PTR	`ip-202-239-23-39.defastlink.net`
NS	`dns02.muumuu-domain.com`
		A	160.251.249.62^{🇯🇵 GMOOSK-NET160.251.128.0/17 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
			PTR	`ip-160-251-249-62.defastlink.net`
SOA	`dns01.muumuu-domain.com`postmaster@tcb-system.com serial=1634010635

`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=1771291435

📈 Tranco rank: #818,608

Same first word

tcb-system.com

DNS History

6 records (4 active, 2 former)

●NSdns01.muumuu-domain.com2019-12-19 → 2026-03-01 · 2 obs

● 2019-12-19 21:23:48
● 2026-03-01 18:12:20

●NSdns02.muumuu-domain.com2019-12-19 → 2026-03-01 · 2 obs

● 2019-12-19 21:23:48
● 2026-03-01 18:12:20

○A13.113.234.502026-03-01 → 2026-03-01 · 2 obs

○ 2026-03-01 06:04:32
○ 2026-03-01 18:12:20

○A13.230.106.1352026-03-01 → 2026-03-01 · 2 obs

○ 2026-03-01 06:04:32
○ 2026-03-01 18:12:20

●A18.179.167.72026-03-01 → 2026-03-01 · 2 obs

● 2026-03-01 06:04:32
● 2026-03-01 18:12:20

●A52.199.60.792026-03-01 → 2026-03-01 · 2 obs

● 2026-03-01 06:04:32
● 2026-03-01 18:12:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
tcb-system.com	dns01.muumuu-domain.com, dns02.muumuu-domain.com	2 records

✅ Authoritative Response

Server: 202.239.23.39

NS records: dns01.muumuu-domain.com, dns02.muumuu-domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tcb-system.com (unsigned zone)

⏱️ Timing

Total: 607ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`18.179.167.7, 52.199.60.79`
NS	2	`dns01.muumuu-domain.com, dns02.muumuu-domain.com`
SOA	1	`dns01.muumuu-domain.com postmaster.tcb-s`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (dns01.muumuu-domain.com, dns02.muumuu-domain.com)

Analysis

IP Addresses

tcb-system.com points to two IP numbers: 18.179.167.7 and 52.199.60.79.

Other host names such as ec2-18-179-167-7.ap-northeast-1.compute.amazonaws.com and ec2-52-199-60-79.ap-northeast-1.compute.amazonaws.com share IP numbers with tcb-system.com.

Name Servers

tcb-system.com is delegated to two name servers: dns01.muumuu-domain.com and dns02.muumuu-domain.com.

tcb-system.com uses the same name server setup as other domains, including mogura.net, ysmc.jp, 77th-st.com, asinagaojisan-group.jp and hokkaido-special.com.

At least part of the name servers for tcb-system.com are shared with other domains, for instance a-eng.net, pokkit-kasa.com, kininaru-sha.net, af2.org and worldts.com.

Hostnames with a single IP

dns01.muumuu-domain.com resolves to: 202.239.23.39.

dns02.muumuu-domain.com resolves to: 160.251.249.62.

tcb-system.com - robtex.com

tcb-system.com

com