`startupclass.co.jp`

DNSSEC	⚠️ Not signed
A	3.174.59.77^{🇺🇸 Amazon3.174.58.0/23}
		PTR	`server-3-174-59-77.gig52.r.cloudfront.net`
A	3.174.59.94^{🇺🇸 Amazon3.174.58.0/23}
A	3.174.59.99^{🇺🇸 Amazon3.174.58.0/23}
A	3.174.59.122^{🇺🇸 Amazon3.174.58.0/23}
NS	`ns-245.awsdns-30.com` ⭐
		A	2600:9000:5300:f500::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-245.awsdns-30.com`
		A	205.251.192.245^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-245.awsdns-30.com`
NS	`ns-1027.awsdns-00.org`
		A	2600:9000:5304:300::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1027.awsdns-00.org`
		A	205.251.196.3^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1027.awsdns-00.org`
NS	`ns-1634.awsdns-12.co.uk`
		A	2600:9000:5306:6200::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1634.awsdns-12.co.uk`
		A	205.251.198.98^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1634.awsdns-12.co.uk`
NS	`ns-917.awsdns-50.net`
		A	2600:9000:5303:9500::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-917.awsdns-50.net`
		A	205.251.195.149^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-917.awsdns-50.net`
MX	`smtp.google.com` ⭐
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	2a00:1450:4009:c19::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrp-in-f26.1e100.net`
		A	2a00:1450:4009:c19::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrp-in-f27.1e100.net`
		A	172.217.76.26^{🇺🇸 Google172.217.76.0/24}
			PTR	`yulhrp-in-f26.1e100.net`
		A	172.217.76.27^{🇺🇸 Google172.217.76.0/24}
			PTR	`yulhrp-in-f27.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`6uh2iwt2ylyr3htjgvsteba2du2zmop4ebr3ipzqedkiloxcaj3a.mx-verification.google.com`⁽¹⁵⁾
TXT	`google-site-verification=9Q-kWnrC8R2eaTVlMgQaHTWWOfwgY7Q_MCDUhbriAnY`
TXT	`google-site-verification=he0Yub8hFWayqNDWeDGIo3rnj9RJE63bbVewa9HIfqs`
SOA	`ns-245.awsdns-30.com`awsdns-hostmaster@amazon.com serial=1

`co.jp`

	DNSSEC	⚠️ Not signed
	TXT	`co.jp.`

WOT: SAFE (58/100)

Same first word

startupclass.co

startupclass.at

startupclass.co.jp

DNS History

34 records (10 active, 24 former)

●NSns-1027.awsdns-00.org2026-03-29 → 2026-04-11 · 2 obs

● 2026-03-29 21:49:08
● 2026-04-11 18:30:54

●NSns-1634.awsdns-12.co.uk2026-03-29 → 2026-04-11 · 2 obs

● 2026-03-29 21:49:08
● 2026-04-11 18:30:54

●NSns-245.awsdns-30.com2026-03-29 → 2026-04-11 · 2 obs

● 2026-03-29 21:49:08
● 2026-04-11 18:30:54

●NSns-917.awsdns-50.net2026-03-29 → 2026-04-11 · 2 obs

● 2026-03-29 21:49:08
● 2026-04-11 18:30:54

●MX6uh2iwt2ylyr3htjgvsteba2du2zmop4ebr3ipzqedkiloxcaj3a.mx-verification.google.com2026-03-29 → 2026-04-11 · 2 obs

● 2026-03-29 21:49:08
● 2026-04-11 18:30:54

●MXsmtp.google.com2026-03-29 → 2026-04-11 · 2 obs

● 2026-03-29 21:49:08
● 2026-04-11 18:30:54

○A108.139.95.112026-04-09 → 2026-04-09 · 4 obs

○ 2026-04-09 10:33:36
● 2026-04-09 21:40:40
○ 2026-04-10 00:03:24
○ 2026-04-11 18:30:54

○A108.139.95.422026-04-09 → 2026-04-09 · 4 obs

○ 2026-04-09 10:33:36
● 2026-04-09 21:40:40
○ 2026-04-10 00:03:24
○ 2026-04-11 18:30:54

○A108.139.95.472026-04-09 → 2026-04-09 · 4 obs

○ 2026-04-09 10:33:36
● 2026-04-09 21:40:40
○ 2026-04-10 00:03:24
○ 2026-04-11 18:30:54

○A108.139.95.542026-04-09 → 2026-04-09 · 4 obs

○ 2026-04-09 10:33:36
● 2026-04-09 21:40:40
○ 2026-04-10 00:03:24
○ 2026-04-11 18:30:54

○A108.158.173.1182026-03-31 → 2026-04-11 · 30 obs

○ 2026-03-31 09:54:08
● 2026-03-31 10:37:28
● 2026-03-31 16:43:06
○ 2026-03-31 18:39:26
○ 2026-04-04 04:21:36
● 2026-04-05 00:18:18
● 2026-04-05 08:13:10
○ 2026-04-05 09:43:12
○ 2026-04-06 06:50:26
● 2026-04-06 07:44:20
● 2026-04-06 08:48:50
○ 2026-04-06 09:52:58
○ 2026-04-07 01:15:52
● 2026-04-07 02:13:22
● 2026-04-07 05:30:56
○ 2026-04-08 01:11:04
○ 2026-04-08 08:39:02
● 2026-04-08 19:37:02
● 2026-04-08 22:29:54
○ 2026-04-09 02:25:52
○ 2026-04-09 03:12:50
● 2026-04-09 08:22:48
○ 2026-04-09 10:33:36
○ 2026-04-10 00:57:28
● 2026-04-10 14:30:50
○ 2026-04-11 01:47:16
○ 2026-04-11 03:48:52
● 2026-04-11 13:48:32
○ 2026-04-11 18:30:52
○ 2026-04-11 18:30:54

○A108.158.173.342026-03-31 → 2026-04-11 · 30 obs

○A108.158.173.462026-03-31 → 2026-04-11 · 30 obs

○A108.158.173.852026-03-31 → 2026-04-11 · 30 obs

○A13.249.91.1032026-03-29 → 2026-03-29 · 3 obs

● 2026-03-29 21:49:08
○ 2026-03-30 02:02:32
○ 2026-04-11 18:30:54

○A13.249.91.1052026-03-29 → 2026-03-29 · 3 obs

● 2026-03-29 21:49:08
○ 2026-03-30 02:02:32
○ 2026-04-11 18:30:54

○A13.249.91.1202026-03-29 → 2026-03-29 · 3 obs

● 2026-03-29 21:49:08
○ 2026-03-30 02:02:32
○ 2026-04-11 18:30:54

○A13.249.91.52026-03-29 → 2026-03-29 · 3 obs

● 2026-03-29 21:49:08
○ 2026-03-30 02:02:32
○ 2026-04-11 18:30:54

○A18.154.84.182026-03-30 → 2026-04-11 · 53 obs

○ 2026-03-29 21:49:08
● 2026-03-30 02:02:32
● 2026-03-30 07:26:02
○ 2026-03-31 00:27:30
● 2026-03-31 03:29:44
● 2026-03-31 04:47:54
○ 2026-03-31 07:14:02
○ 2026-03-31 08:41:00
● 2026-03-31 09:54:08
○ 2026-03-31 10:37:28
○ 2026-03-31 23:11:38
● 2026-04-01 01:01:18
● 2026-04-01 03:01:38
○ 2026-04-01 08:33:00
○ 2026-04-01 18:44:34
● 2026-04-02 03:13:34
● 2026-04-02 03:54:10
○ 2026-04-02 12:53:02
● 2026-04-02 17:13:40
● 2026-04-03 01:31:32
○ 2026-04-03 04:45:00
● 2026-04-03 06:56:12
○ 2026-04-03 16:28:46
● 2026-04-03 20:35:36
● 2026-04-04 01:52:24
○ 2026-04-04 04:21:36
○ 2026-04-05 09:43:12
● 2026-04-06 00:13:38
● 2026-04-06 00:56:02
○ 2026-04-06 04:10:06
● 2026-04-06 06:50:26
○ 2026-04-06 07:44:20
○ 2026-04-06 08:48:50
● 2026-04-06 09:52:58
● 2026-04-07 01:15:52
○ 2026-04-07 02:13:22
○ 2026-04-07 05:30:56
● 2026-04-08 01:11:04
● 2026-04-08 08:39:02
○ 2026-04-08 19:37:02
○ 2026-04-08 22:29:54
● 2026-04-09 02:25:52
● 2026-04-09 03:12:50
○ 2026-04-09 08:22:48
● 2026-04-09 10:33:36
○ 2026-04-09 21:40:40
● 2026-04-10 00:03:24
● 2026-04-10 00:57:28
○ 2026-04-10 14:30:50
● 2026-04-11 01:47:16
● 2026-04-11 03:48:52
○ 2026-04-11 13:48:32
○ 2026-04-11 18:30:54

○A18.154.84.232026-03-30 → 2026-04-11 · 53 obs

○A18.154.84.292026-03-30 → 2026-04-11 · 53 obs

○A18.154.84.942026-03-30 → 2026-04-11 · 53 obs

○A3.162.247.1102026-04-06 → 2026-04-06 · 4 obs

○ 2026-04-06 00:56:02
● 2026-04-06 04:10:06
○ 2026-04-06 06:50:26
○ 2026-04-11 18:30:54

○A3.162.247.1152026-04-06 → 2026-04-06 · 4 obs

○ 2026-04-06 00:56:02
● 2026-04-06 04:10:06
○ 2026-04-06 06:50:26
○ 2026-04-11 18:30:54

○A3.162.247.342026-04-06 → 2026-04-06 · 4 obs

○ 2026-04-06 00:56:02
● 2026-04-06 04:10:06
○ 2026-04-06 06:50:26
○ 2026-04-11 18:30:54

○A3.162.247.592026-04-06 → 2026-04-06 · 4 obs

○ 2026-04-06 00:56:02
● 2026-04-06 04:10:06
○ 2026-04-06 06:50:26
○ 2026-04-11 18:30:54

○A3.163.83.1102026-03-31 → 2026-04-05 · 30 obs

○ 2026-03-30 07:26:02
● 2026-03-31 00:27:30
○ 2026-03-31 03:29:44
○ 2026-03-31 04:47:54
● 2026-03-31 07:14:02
● 2026-03-31 08:41:00
○ 2026-03-31 09:54:08
○ 2026-03-31 16:43:06
● 2026-03-31 18:39:26
● 2026-03-31 23:11:38
○ 2026-04-01 01:01:18
○ 2026-04-01 03:01:38
● 2026-04-01 08:33:00
● 2026-04-01 18:44:34
○ 2026-04-02 03:13:34
○ 2026-04-02 03:54:10
● 2026-04-02 12:53:02
○ 2026-04-02 17:13:40
○ 2026-04-03 01:31:32
● 2026-04-03 04:45:00
○ 2026-04-03 06:56:12
● 2026-04-03 16:28:46
○ 2026-04-03 20:35:36
○ 2026-04-04 01:52:24
● 2026-04-04 04:21:36
○ 2026-04-05 00:18:18
○ 2026-04-05 08:13:10
● 2026-04-05 09:43:12
○ 2026-04-06 00:13:38
○ 2026-04-11 18:30:54

○A3.163.83.322026-03-31 → 2026-04-05 · 30 obs

○A3.163.83.662026-03-31 → 2026-04-05 · 30 obs

○A3.163.83.892026-03-31 → 2026-04-05 · 30 obs

●A3.174.59.1222026-04-11 → 2026-04-11 · 3 obs

○ 2026-04-11 13:48:32
● 2026-04-11 18:30:52
● 2026-04-11 18:30:54

●A3.174.59.772026-04-11 → 2026-04-11 · 3 obs

○ 2026-04-11 13:48:32
● 2026-04-11 18:30:52
● 2026-04-11 18:30:54

●A3.174.59.942026-04-11 → 2026-04-11 · 3 obs

○ 2026-04-11 13:48:32
● 2026-04-11 18:30:52
● 2026-04-11 18:30:54

●A3.174.59.992026-04-11 → 2026-04-11 · 3 obs

○ 2026-04-11 13:48:32
● 2026-04-11 18:30:52
● 2026-04-11 18:30:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	e.dns.jp, b.dns.jp, c.dns.jp, f.dns.jp...	-
startupclass.co.jp	ns-245.awsdns-30.com, ns-917.awsdns-50.net, ns-1027.awsdns-00.org, ns-1634.awsdns-12.co.uk	-

✅ Authoritative Response

Server:205.251.192.245

NS records: ns-245.awsdns-30.com, ns-917.awsdns-50.net, ns-1027.awsdns-00.org, ns-1634.awsdns-12.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 829ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.174.59.77, 3.174.59.99...`
NS	4	`ns-1027.awsdns-00.org, ns-1634.awsdns-12.co.uk...`
MX	2	`smtp.google.com (pri: 1), 6uh2iwt2ylyr3htjgvsteba2du2zmop4ebr3ipzq`
TXT	2	`google-site-verification=9Q-kWnrC8R2eaTV, google-site-verification=he0Yub8hFWayqND`
SOA	1	`ns-245.awsdns-30.com awsdns-hostmaster.a`

Analysis

IP Addresses

startupclass.co.jp maps to four IP numbers: 3.174.59.77, 3.174.59.94, 3.174.59.99 and 3.174.59.122.

other host names include www.kvichain.io, d1sj15rzmn2sr9.cloudfront.net, zoodigitalgroup.com, d3lan8dccx7seg.cloudfront.net and nebconsultants.ae; they share IP numbers with startupclass.co.jp.

Name Servers

startupclass.co.jp delegates to four name servers: ns-245.awsdns-30.com, ns-917.awsdns-50.net, ns-1027.awsdns-00.org and ns-1634.awsdns-12.co.uk.

startupclass.co.jp at least partially shares name servers with other domains, for instance shop.flixbus.co.uk, nikmouz.dev, mazebio.com, k2.ca and www.hempbombs.com.

Host names with two IP numbers: ns-245.awsdns-30.com points to 2600:9000:5300:f500::1 and 205.251.192.245; ns-917.awsdns-50.net points to 2600:9000:5303:9500::1 and 205.251.195.149; ns-1027.awsdns-00.org points to 2600:9000:5304:300::1 and 205.251.196.3; ns-1634.awsdns-12.co.uk points to 2600:9000:5306:6200::1 and 205.251.198.98.

Mail Servers

startupclass.co.jp is handled by two mail servers: smtp.google.com and 6uh2iwt2ylyr3htjgvsteba2du2zmop4ebr3ipzqedkiloxcaj3a.mx-verification.google.com.

startupclass.co.jp shares at least partially some mail servers with other domains, for instance konzok.com, happybrands.gr, mensgroupagainstcancer.org, drivingacademy.com and engequality.com.

These mail servers are often used together with aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

Eight IP numbers for host name smtp.google.com: 2a00:1450:4009:c0f::1a, 2a00:1450:4009:c0f::1b, 2a00:1450:4009:c19::1a, 2a00:1450:4009:c19::1b, 172.217.76.26, 172.217.76.27, 192.178.223.26 and 192.178.223.27.

startupclass.co.jp - robtex.com