redhat.co.jp - robtex.com

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`redhat.co.jp`

DNSSEC	⚠️ Not signed
A	2600:1f18:297:ba0e:7900:f622:48a8:f266^{🇺🇸 Amazon}
A	2600:1f18:297:ba18:6ddc:5d8f:6053:f003^{🇺🇸 Amazon}
A	2600:1f18:297:ba24:b508:76de:f4a:df34^{🇺🇸 Amazon}
A	54.157.108.158^{🇺🇸 Amazon}
A	98.83.184.133^{🇺🇸 Amazon}
A	100.28.104.175^{🇺🇸 Amazon}
NS	`dns1.p01.nsone.net` ⭐ 🔒
		A	2620:4d:4000:6259:7:1:0:1^{🇺🇸 NSONE}
			PTR	`dns1.p01.nsone.net`
		A	198.51.44.1^{🇺🇸 NSONE}
			PTR	`dns1.p01.nsone.net`
NS	`dns2.p01.nsone.net`
		A	2a00:edc0:6259:7:1::2^{🇺🇸 NSONE}
			PTR	`dns2.p01.nsone.net`
		A	198.51.45.1^{🇺🇸 NSONE}
			PTR	`dns2.p01.nsone.net`
NS	`dns3.p01.nsone.net`
		A	2620:4d:4000:6259:7:1:0:3^{🇺🇸 NSONE}
			PTR	`dns3.p01.nsone.net`
		A	198.51.44.65^{🇺🇸 NSONE}
			PTR	`dns3.p01.nsone.net`
NS	`dns4.p01.nsone.net`
		A	2a00:edc0:6259:7:1::4^{🇺🇸 NSONE}
			PTR	`dns4.p01.nsone.net`
		A	198.51.45.65^{🇺🇸 NSONE}
			PTR	`dns4.p01.nsone.net`
MX	`mx1.redhat.com` ⭐
		A	52.25.184.255^{🇺🇸 Amazon}
			PTR	`ec2-52-25-184-255.us-west-2.compute.amazonaws.com`
MX	`mx2.redhat.com`⁽²⁰⁾
		A	52.25.184.255^{🇺🇸 Amazon}
			PTR	`ec2-52-25-184-255.us-west-2.compute.amazonaws.com`
TXT	`v=spf1 -all`
SOA	`dns1.p01.nsone.net`hostmaster@nsone.net serial=1677137794

`co.jp`

	DNSSEC	🔒 Signed (DS record present)
	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`
	TXT	`co.jp.`

Same first word

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redhat.at

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redhat.com.cn

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DNS History

16 records (12 active, 4 former)

●NSdns1.p01.nsone.net2026-02-15 → 2026-02-15 · 3 obs

○ 2017-03-14 08:36:38
● 2026-02-15 20:21:36
● 2026-02-15 20:21:38

●NSdns2.p01.nsone.net2026-02-15 → 2026-02-15 · 3 obs

○ 2017-03-14 08:36:38
● 2026-02-15 20:21:36
● 2026-02-15 20:21:38

●NSdns3.p01.nsone.net2026-02-15 → 2026-02-15 · 3 obs

○ 2017-03-14 08:36:38
● 2026-02-15 20:21:36
● 2026-02-15 20:21:38

●NSdns4.p01.nsone.net2026-02-15 → 2026-02-15 · 3 obs

○ 2017-03-14 08:36:38
● 2026-02-15 20:21:36
● 2026-02-15 20:21:38

○NSns1.redhat.com2015-06-17 → 2017-03-14 · 4 obs

● 2015-06-17 17:13:52
● 2017-03-14 08:36:38
○ 2026-02-15 20:21:36
○ 2026-02-15 20:21:38

○NSns2.redhat.com2015-06-17 → 2017-03-14 · 4 obs

● 2015-06-17 17:13:52
● 2017-03-14 08:36:38
○ 2026-02-15 20:21:36
○ 2026-02-15 20:21:38

○NSns3.redhat.com2015-06-17 → 2017-03-14 · 4 obs

● 2015-06-17 17:13:52
● 2017-03-14 08:36:38
○ 2026-02-15 20:21:36
○ 2026-02-15 20:21:38

●MXmx1.redhat.com2015-06-17 → 2026-02-15 · 2 obs

● 2015-06-17 17:13:52
● 2026-02-15 20:21:38

●MXmx2.redhat.com2015-06-17 → 2026-02-15 · 2 obs

● 2015-06-17 17:13:52
● 2026-02-15 20:21:38

●A100.28.104.1752026-02-15 → 2026-02-15 · 3 obs

○ 2017-03-14 08:36:38
● 2026-02-15 20:21:36
● 2026-02-15 20:21:38

○A209.132.183.1052015-06-17 → 2017-03-14 · 4 obs

● 2015-06-17 17:13:52
● 2017-03-14 08:36:38
○ 2026-02-15 20:21:36
○ 2026-02-15 20:21:38

●A2600:1f18:297:ba0e:7900:f622:48a8:f2662026-02-15 → 2026-02-15 · 3 obs

○ 2017-03-14 08:36:38
● 2026-02-15 20:21:36
● 2026-02-15 20:21:38

●A2600:1f18:297:ba18:6ddc:5d8f:6053:f0032026-02-15 → 2026-02-15 · 3 obs

○ 2017-03-14 08:36:38
● 2026-02-15 20:21:36
● 2026-02-15 20:21:38

●A2600:1f18:297:ba24:b508:76de:f4a:df342026-02-15 → 2026-02-15 · 3 obs

○ 2017-03-14 08:36:38
● 2026-02-15 20:21:36
● 2026-02-15 20:21:38

●A54.157.108.1582026-02-15 → 2026-02-15 · 3 obs

○ 2017-03-14 08:36:38
● 2026-02-15 20:21:36
● 2026-02-15 20:21:38

●A98.83.184.1332026-02-15 → 2026-02-15 · 3 obs

○ 2017-03-14 08:36:38
● 2026-02-15 20:21:36
● 2026-02-15 20:21:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	b.dns.jp, c.dns.jp, f.dns.jp, g.dns.jp...	-
redhat.co.jp	dns2.p01.nsone.net, dns4.p01.nsone.net, dns3.p01.nsone.net, dns1.p01.nsone.net	-

✅ Authoritative Response

Server: 198.51.44.65

NS records: dns2.p01.nsone.net, dns4.p01.nsone.net, dns3.p01.nsone.net, dns1.p01.nsone.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 967ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`54.157.108.158, 100.28.104.175...`
AAAA	3	`2600:1f18:297:ba0e:7900:f622:48a8:f266, 2600:1f18:297:ba18:6ddc:5d8f:6053:f003...`
NS	4	`dns1.p01.nsone.net, dns2.p01.nsone.net...`
MX	2	`mx1.redhat.com (pri: 10), mx2.redhat.com (pri: 20)`
TXT	1	`v=spf1 -all`
SOA	1	`dns1.p01.nsone.net hostmaster.nsone.net`

AI analysis

redhat.co.jp resolves to six IP addresses: 2600:1f18:297:ba0e:7900:f622:48a8:f266, 2600:1f18:297:ba18:6ddc:5d8f:6053:f003, 2600:1f18:297:ba24:b508:76de:f4a:df34, 54.157.108.158, 98.83.184.133 and 100.28.104.175.

other host names including davidlloydclubs.it, porschedesign-eyewear.de, virginbingo.tv, fire.villas and galderma.it share IP numbers with redhat.co.jp.

redhat.co.jp is delegated to four name servers: dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net and dns4.p01.nsone.net.

redhat.co.jp at least partially shares name servers with other domains, for instance propdetails.com, nsigateway.com, ethicon.co.cr, tf-fx.com and commonpastor.com.

These name servers are commonly used with the following name servers: ns01.squarespacedns.com, ns02.squarespacedns.com, ns03.squarespacedns.com, ns04.squarespacedns.com, ns01.jnjdns.com, ns02.jnjdns.com, ns03.jnjdns.com, ns04.jnjdns.com, dns1.p03.nsone.net and dns2.p03.nsone.net.

Host names with two IP numbers:

dns1.p01.nsone.net points to 2620:4d:4000:6259:7:1:0:1 and 198.51.44.1; dns2.p01.nsone.net points to 2a00:edc0:6259:7:1::2 and 198.51.45.1; dns3.p01.nsone.net points to 2620:4d:4000:6259:7:1:0:3 and 198.51.44.65; dns4.p01.nsone.net points to 2a00:edc0:6259:7:1::4 and 198.51.45.65.

Two mail servers handle redhat.co.jp: mx1.redhat.com and mx2.redhat.com.

redhat.co.jp shares the same mail server setup as other domains, for instance jboss.com, whatcanidoforfedora.org, webappvm.com, dogtagpki.org and amentra.com.

redhat.co.jp shares some mail servers with other domains, at least partially, for instance camelone.com, redhat.nl, openshift.ai, ironjacamar.org and redhat.sg.

Host names with a single IP:

mx1.redhat.com points to 52.25.184.255.

mx2.redhat.com points to 52.25.184.255.

Host names pointing to 52.25.184.255: mx1.redhat.com and mx2.redhat.com.