codeprep.jp - dns.ninja

`codeprep.jp`

DNSSEC	⚠️ Not signed
A	3.112.180.240^{🇯🇵 Amazon3.112.0.0/14 EC2 NRT prefix}
		PTR	`ec2-3-112-180-240.ap-northeast-1.compute.amazonaws.com`
A	54.92.0.126^{🇯🇵 Amazon54.92.0.0/17 EC2 NRT prefix}
NS	`ns-236.awsdns-29.com` ⭐
		A	2600:9000:5300:ec00::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-236.awsdns-29.com`
		A	205.251.192.236^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-236.awsdns-29.com`
NS	`ns-1154.awsdns-16.org`
		A	2600:9000:5304:8200::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1154.awsdns-16.org`
		A	205.251.196.130^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1154.awsdns-16.org`
NS	`ns-1610.awsdns-09.co.uk`
		A	2600:9000:5306:4a00::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1610.awsdns-09.co.uk`
		A	205.251.198.74^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1610.awsdns-09.co.uk`
NS	`ns-807.awsdns-36.net`
		A	2600:9000:5303:2700::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-807.awsdns-36.net`
		A	205.251.195.39^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-807.awsdns-36.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c0b::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bj-in-f27.1e100.net`
		A	192.178.218.26^{🇺🇸 Google192.178.218.0/24}
			PTR	`yuiadtq-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`aspmx2.googlemail.com`⁽¹⁰⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`aspmx3.googlemail.com`⁽¹⁰⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
TXT	`v=spf1 include:_spf.google.com ~all`
SOA	`ns-236.awsdns-29.com`awsdns-hostmaster@amazon.com serial=1

`jp`

	DNSSEC	🔒 Signed (DS record present)
	NS	`z.dns.jp` ⭐
	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`
	SOA	`z.dns.jp`root@dns.jp serial=1782290702

Subdomains

assets.codeprep.jp

Same first word

codeprep.io

codeprep.jp

codeprep.sakura.ne.jp

codeprep.com

codeprep.herokuapp.com

Similar names

redecopp.com

coppered.com

deepcrop.com

deepcorp.com

prepcode.com

podcreep.com

deepcorp.ca

DNS History

27 records (11 active, 16 former)

○NS01.dnsv.jp2015-07-24 → 2016-07-13 · 4 obs

● 2015-07-24 19:18:56
● 2016-07-13 16:07:06
○ 2017-01-04 08:16:26
○ 2026-06-24 09:26:06

○NS02.dnsv.jp2015-07-24 → 2016-07-13 · 4 obs

● 2015-07-24 19:18:56
● 2016-07-13 16:07:06
○ 2017-01-04 08:16:26
○ 2026-06-24 09:26:06

○NS03.dnsv.jp2015-07-24 → 2016-07-13 · 4 obs

● 2015-07-24 19:18:56
● 2016-07-13 16:07:06
○ 2017-01-04 08:16:26
○ 2026-06-24 09:26:06

○NS04.dnsv.jp2015-07-24 → 2016-07-13 · 4 obs

● 2015-07-24 19:18:56
● 2016-07-13 16:07:06
○ 2017-01-04 08:16:26
○ 2026-06-24 09:26:06

●NSns-1154.awsdns-16.org2017-01-04 → 2026-06-24 · 3 obs

○ 2016-07-13 16:07:06
● 2017-01-04 08:16:26
● 2026-06-24 09:26:06

●NSns-1610.awsdns-09.co.uk2017-01-04 → 2026-06-24 · 3 obs

○ 2016-07-13 16:07:06
● 2017-01-04 08:16:26
● 2026-06-24 09:26:06

●NSns-236.awsdns-29.com2017-01-04 → 2026-06-24 · 3 obs

○ 2016-07-13 16:07:06
● 2017-01-04 08:16:26
● 2026-06-24 09:26:06

●NSns-807.awsdns-36.net2017-01-04 → 2026-06-24 · 3 obs

○ 2016-07-13 16:07:06
● 2017-01-04 08:16:26
● 2026-06-24 09:26:06

●MXalt1.aspmx.l.google.com2018-08-03 → 2026-06-24 · 3 obs

○ 2017-01-04 08:16:26
● 2018-08-03 04:17:54
● 2026-06-24 09:26:06

●MXalt2.aspmx.l.google.com2018-08-03 → 2026-06-24 · 3 obs

○ 2017-01-04 08:16:26
● 2018-08-03 04:17:54
● 2026-06-24 09:26:06

●MXaspmx.l.google.com2018-08-03 → 2026-06-24 · 3 obs

○ 2017-01-04 08:16:26
● 2018-08-03 04:17:54
● 2026-06-24 09:26:06

●MXaspmx2.googlemail.com2018-08-03 → 2026-06-24 · 3 obs

○ 2017-01-04 08:16:26
● 2018-08-03 04:17:54
● 2026-06-24 09:26:06

●MXaspmx3.googlemail.com2018-08-03 → 2026-06-24 · 3 obs

○ 2017-01-04 08:16:26
● 2018-08-03 04:17:54
● 2026-06-24 09:26:06

○MXcodeprep.sakura.ne.jp2015-07-24 → 2016-07-13 · 4 obs

● 2015-07-24 19:18:56
● 2016-07-13 16:07:06
○ 2017-01-04 08:16:26
○ 2026-06-24 09:26:06

○A13.115.189.962026-03-01 → 2026-06-24 · 2 obs

○ 2026-03-01 08:15:50
○ 2026-06-24 09:26:06

○A13.230.84.1982018-08-03 → 2018-08-03 · 4 obs

○ 2017-01-04 08:16:26
● 2018-08-03 04:17:54
○ 2026-03-01 08:15:50
○ 2026-06-24 09:26:06

○A133.242.166.1512015-07-24 → 2017-01-04 · 4 obs

● 2015-07-24 19:18:56
● 2017-01-04 08:16:26
○ 2018-08-03 04:17:54
○ 2026-06-24 09:26:06

○A18.180.94.1532026-03-19 → 2026-03-19 · 4 obs

○ 2026-03-02 02:15:34
● 2026-03-19 03:49:58
○ 2026-05-15 17:48:24
○ 2026-06-24 09:26:06

●A3.112.180.2402026-06-24 → 2026-06-24 · 3 obs

○ 2026-05-15 17:48:24
● 2026-06-24 06:54:36
● 2026-06-24 09:26:06

○A3.113.224.2512026-03-01 → 2026-06-24 · 2 obs

○ 2026-03-01 08:15:50
○ 2026-06-24 09:26:06

○A52.193.248.982026-03-19 → 2026-03-19 · 4 obs

○ 2026-03-02 02:15:34
● 2026-03-19 03:49:58
○ 2026-05-15 17:48:24
○ 2026-06-24 09:26:06

○A52.68.207.282026-05-15 → 2026-05-15 · 4 obs

○ 2026-03-19 03:49:58
● 2026-05-15 17:48:24
○ 2026-06-24 06:54:36
○ 2026-06-24 09:26:06

○A52.69.241.412018-08-03 → 2018-08-03 · 4 obs

○ 2017-01-04 08:16:26
● 2018-08-03 04:17:54
○ 2026-03-01 08:15:50
○ 2026-06-24 09:26:06

○A54.150.100.1032026-05-15 → 2026-05-15 · 4 obs

○ 2026-03-19 03:49:58
● 2026-05-15 17:48:24
○ 2026-06-24 06:54:36
○ 2026-06-24 09:26:06

○A54.248.79.1962026-03-01 → 2026-03-02 · 5 obs

○ 2018-08-03 04:17:54
● 2026-03-01 08:15:50
● 2026-03-02 02:15:34
○ 2026-03-19 03:49:58
○ 2026-06-24 09:26:06

●A54.92.0.1262026-06-24 → 2026-06-24 · 3 obs

○ 2026-05-15 17:48:24
● 2026-06-24 06:54:36
● 2026-06-24 09:26:06

○A57.180.188.792026-03-01 → 2026-03-02 · 5 obs

○ 2018-08-03 04:17:54
● 2026-03-01 08:15:50
● 2026-03-02 02:15:34
○ 2026-03-19 03:49:58
○ 2026-06-24 09:26:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp...	-
codeprep.jp	ns-236.awsdns-29.com, ns-1610.awsdns-09.co.uk, ns-1154.awsdns-16.org, ns-807.awsdns-36.net	-

✅ Authoritative Response

Server:205.251.195.39

NS records: ns-236.awsdns-29.com, ns-1610.awsdns-09.co.uk, ns-1154.awsdns-16.org, ns-807.awsdns-36.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for codeprep.jp (unsigned zone)

⏱️ Timing

Total: 814ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`54.92.0.126, 3.112.180.240`
NS	4	`ns-1154.awsdns-16.org, ns-1610.awsdns-09.co.uk...`
MX	5	`aspmx.l.google.com (pri: 1), aspmx2.googlemail.com (pri: 10)...`
TXT	1	`v=spf1 include:_spf.google.com ~all`
SOA	1	`ns-236.awsdns-29.com awsdns-hostmaster.a`

Analysis

Hierarchy

codeprep.jp is the parent zone for assets.codeprep.jp.

IP Addresses

codeprep.jp directs to two IP numbers, 3.112.180.240 and 54.92.0.126

Name Servers

codeprep.jp has four authoritative name servers: ns-236.awsdns-29.com, ns-807.awsdns-36.net, ns-1154.awsdns-16.org and ns-1610.awsdns-09.co.uk.

codeprep.jp partially shares its NS delegation with several other domains, including vidyocloudstaging.com, herones.com, acquedolci.it and two others.

In DNS configurations, these name servers often share authority with ns-336.awsdns-42.com, ns3.vortala.com, ns4.vortala.com and 4 other name servers.

ns-236.awsdns-29.com, ns-807.awsdns-36.net, ns-1154.awsdns-16.org and ns-1610.awsdns-09.co.uk each carry two IP addresses. ns-236.awsdns-29.com has 205.251.192.236 and 2600:9000:5300:ec00::1; ns-807.awsdns-36.net has 205.251.195.39 and 2600:9000:5303:2700::1; ns-1154.awsdns-16.org has 205.251.196.130 and 2600:9000:5304:8200::1; ns-1610.awsdns-09.co.uk has 205.251.198.74 and 2600:9000:5306:4a00::1.

Mail Servers

Mail for codeprep.jp is handled by five mail servers, namely aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.

codeprep.jp shares mail servers — at least in part — with other domains, including ns500693.ns500693.ns500699.ns500699.ns500734.ns500693.ns500699.ns500683.ns500699.ns500693.ns500602.dtrkdll.com, ns500734.ns500693.ns500734.ns500699.ns500699.ns500588.ns500699.ns500699.ns500683.ns500588.ns500632.ns500612.ns500588.ns500632.ns500612.ns500578.ns500110.dtrkdll.com, encanel.com.br and two others.

These mail servers are frequently used alongside mail servers alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 other.

Host names with two IP numbers:

aspmx2.googlemail.com resolves to 108.177.123.26 and 2800:3f0:4003:c0f::1b.

aspmx3.googlemail.com resolves to 172.253.116.26 and 2a00:1450:400b:c02::1b.

aspmx.l.google.com resolves to 192.178.218.26 and 2607:f8b0:4004:c0b::1b.

alt1.aspmx.l.google.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1a.