coderdojo.jp - dns.ninja

`coderdojo.jp`

DNSSEC	⚠️ Not signed
A	13.248.244.96^{🇺🇸 Amazon13.248.240.0/20}
		PTR	`af2c0c9576fba10fd.awsglobalaccelerator.com`
A	35.71.179.82^{🇺🇸 Amazon35.71.176.0/20}
A	75.2.60.68^{🇺🇸 Amazon75.2.60.0/24 Prod}
A	99.83.220.108^{🇺🇸 Amazon99.83.208.0/20}
NS	`ns2.gehirndns.jp` ⭐
		A	2400:cb00:2049:1::a29f:19a2^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns2.gehirndns.jp`
		A	162.159.25.162^{Cloudflare162.159.25.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.gehirndns.jp`
NS	`ns2.gehirndns.com`
		A	2400:cb00:2049:1::a29f:188c^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns2.gehirndns.com`
		A	162.159.24.140^{Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.gehirndns.com`
NS	`ns2.gehirndns.net`
		A	2400:cb00:2049:1::a29f:19a9^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns2.gehirndns.net`
		A	162.159.25.169^{Cloudflare162.159.25.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.gehirndns.net`
NS	`ns2.gehirndns.org`
		A	2400:cb00:2049:1::a29f:1889^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns2.gehirndns.org`
		A	162.159.24.137^{Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.gehirndns.org`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c23::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f26.1e100.net`
		A	192.178.155.26^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:2803::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`lcausr-in-f27.1e100.net`
		A	172.217.216.26^{🇺🇸 Google172.217.0.0/16}
			PTR	`lcausr-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:3003::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yulnkjt-in-f26.1e100.net`
		A	172.253.145.27^{🇺🇸 Google172.253.145.0/24}
			PTR	`yulnkjt-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2607:f8b0:4023:1015::1a^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yudfwta-in-f26.1e100.net`
		A	172.253.135.26^{🇺🇸 Google172.253.135.0/24}
			PTR	`yudfwta-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`gehirn-dns-verification=1bf6868a069211e922e1d1c6ec1ea716587aebb3`
TXT	`slack-domain-verification=bqjV841HTOhmCpKyFtY3ZyKqACqg1kXFePI8GIex`
TXT	`MS=ms41903836`
TXT	`google-site-verification=hw_-60DqH13JG3KlkhjWhUUh30jZtqtn3pgn34nan6s`
TXT	`google-site-verification=rfZAU6VfAqDrPGPHca_W7UZQqHrczs4pH_CiLw9M_zY`
TXT	`google-site-verification=ZP0bkEgv4RkS5VvI5XM1o0D312VxuUD7p4h43B5R6RQ`
TXT	`v=spf1 +ip4:182.48.20.134/32 +a +include:spf.secure.ne.jp +include:_spf.googl...`
SOA	`ns2.gehirndns.jp`hostmaster@gehirn.co.jp 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=1783256403

rank #719889 globally
rank #14160 in the tld

Same first word

coderdojo.se

coderdojo.chiba.jp

coderdojo.gr

coderdojo.lt

coderdojo.es

coderdojo.jp

coderdojo.ro

coderdojo.ca

coderdojo.ru

coderdojo.work

coderdojo.at

coderdojo.be

coderdojo.tv.it

coderdojo.org.pl

coderdojo.it

coderdojo.nl

coderdojo.com

coderdojo.nz

coderdojo.net

coderdojo.org

Similar names

decordojo.com

DNS History

31 records (13 active, 18 former)

○NS01.dnsv.jp2015-07-17 → 2016-06-25 · 4 obs

● 2015-07-17 17:56:48
● 2016-06-25 04:21:44
○ 2017-04-03 04:14:48
○ 2026-07-05 13:10:20

○NS02.dnsv.jp2015-07-17 → 2016-06-25 · 4 obs

● 2015-07-17 17:56:48
● 2016-06-25 04:21:44
○ 2017-04-03 04:14:48
○ 2026-07-05 13:10:20

○NS03.dnsv.jp2015-07-17 → 2016-06-25 · 4 obs

● 2015-07-17 17:56:48
● 2016-06-25 04:21:44
○ 2017-04-03 04:14:48
○ 2026-07-05 13:10:20

○NS04.dnsv.jp2015-07-17 → 2016-06-25 · 4 obs

● 2015-07-17 17:56:48
● 2016-06-25 04:21:44
○ 2017-04-03 04:14:48
○ 2026-07-05 13:10:20

○NSns.gis.gehirn.jp2017-04-03 → 2017-04-03 · 4 obs

○ 2016-06-25 04:21:44
● 2017-04-03 04:14:48
○ 2026-04-14 09:05:56
○ 2026-07-05 13:10:20

●NSns2.gehirndns.com2017-04-03 → 2026-07-05 · 3 obs

○ 2016-06-25 04:21:44
● 2017-04-03 04:14:48
● 2026-07-05 13:10:20

●NSns2.gehirndns.jp2017-04-03 → 2026-07-05 · 3 obs

○ 2016-06-25 04:21:44
● 2017-04-03 04:14:48
● 2026-07-05 13:10:20

●NSns2.gehirndns.net2017-04-03 → 2026-07-05 · 3 obs

○ 2016-06-25 04:21:44
● 2017-04-03 04:14:48
● 2026-07-05 13:10:20

●NSns2.gehirndns.org2017-04-03 → 2026-07-05 · 3 obs

○ 2016-06-25 04:21:44
● 2017-04-03 04:14:48
● 2026-07-05 13:10:20

○MXaf114.secure.ne.jp2016-03-09 → 2017-04-03 · 4 obs

● 2016-03-09 09:48:46
● 2017-04-03 04:14:48
○ 2026-04-14 09:05:56
○ 2026-07-05 13:10:20

●MXalt1.aspmx.l.google.com2026-04-14 → 2026-07-05 · 3 obs

○ 2017-04-03 04:14:48
● 2026-04-14 09:05:56
● 2026-07-05 13:10:20

●MXalt2.aspmx.l.google.com2026-04-14 → 2026-07-05 · 3 obs

○ 2017-04-03 04:14:48
● 2026-04-14 09:05:56
● 2026-07-05 13:10:20

●MXalt3.aspmx.l.google.com2026-04-14 → 2026-07-05 · 3 obs

○ 2017-04-03 04:14:48
● 2026-04-14 09:05:56
● 2026-07-05 13:10:20

●MXalt4.aspmx.l.google.com2026-04-14 → 2026-07-05 · 3 obs

○ 2017-04-03 04:14:48
● 2026-04-14 09:05:56
● 2026-07-05 13:10:20

●MXaspmx.l.google.com2026-04-14 → 2026-07-05 · 3 obs

○ 2017-04-03 04:14:48
● 2026-04-14 09:05:56
● 2026-07-05 13:10:20

●A13.248.244.962026-04-14 → 2026-07-05 · 3 obs

○ 2017-04-03 04:14:48
● 2026-04-14 09:05:56
● 2026-07-05 13:10:20

○A184.72.248.1712017-04-03 → 2017-04-03 · 4 obs

○ 2016-06-25 04:21:44
● 2017-04-03 04:14:48
○ 2026-04-14 09:05:56
○ 2026-07-05 13:10:20

○A192.30.252.1532015-07-17 → 2015-07-17 · 3 obs

● 2015-07-17 17:56:48
○ 2015-12-02 06:07:54
○ 2026-07-05 13:10:20

○A192.30.252.1542015-07-17 → 2015-07-17 · 3 obs

● 2015-07-17 17:56:48
○ 2015-12-02 06:07:54
○ 2026-07-05 13:10:20

○A23.21.77.862017-04-03 → 2017-04-03 · 4 obs

○ 2016-06-25 04:21:44
● 2017-04-03 04:14:48
○ 2026-04-14 09:05:56
○ 2026-07-05 13:10:20

○A23.23.117.2282017-04-03 → 2017-04-03 · 4 obs

○ 2016-06-25 04:21:44
● 2017-04-03 04:14:48
○ 2026-04-14 09:05:56
○ 2026-07-05 13:10:20

○A23.23.128.1232017-04-03 → 2017-04-03 · 4 obs

○ 2016-06-25 04:21:44
● 2017-04-03 04:14:48
○ 2026-04-14 09:05:56
○ 2026-07-05 13:10:20

○A23.23.223.1972017-04-03 → 2017-04-03 · 4 obs

○ 2016-06-25 04:21:44
● 2017-04-03 04:14:48
○ 2026-04-14 09:05:56
○ 2026-07-05 13:10:20

●A35.71.179.822026-04-14 → 2026-07-05 · 3 obs

○ 2017-04-03 04:14:48
● 2026-04-14 09:05:56
● 2026-07-05 13:10:20

○A50.19.93.2472017-04-03 → 2017-04-03 · 4 obs

○ 2016-06-25 04:21:44
● 2017-04-03 04:14:48
○ 2026-04-14 09:05:56
○ 2026-07-05 13:10:20

○A54.225.186.2552017-04-03 → 2017-04-03 · 4 obs

○ 2016-06-25 04:21:44
● 2017-04-03 04:14:48
○ 2026-04-14 09:05:56
○ 2026-07-05 13:10:20

○A54.235.135.1582017-04-03 → 2017-04-03 · 4 obs

○ 2016-06-25 04:21:44
● 2017-04-03 04:14:48
○ 2026-04-14 09:05:56
○ 2026-07-05 13:10:20

○A54.85.226.1902015-12-02 → 2016-06-25 · 5 obs

○ 2015-07-17 17:56:48
● 2015-12-02 06:07:54
● 2016-06-25 04:21:44
○ 2017-04-03 04:14:48
○ 2026-07-05 13:10:20

○A54.85.233.1452015-12-02 → 2016-06-25 · 5 obs

○ 2015-07-17 17:56:48
● 2015-12-02 06:07:54
● 2016-06-25 04:21:44
○ 2017-04-03 04:14:48
○ 2026-07-05 13:10:20

●A75.2.60.682026-04-14 → 2026-07-05 · 3 obs

○ 2017-04-03 04:14:48
● 2026-04-14 09:05:56
● 2026-07-05 13:10:20

●A99.83.220.1082026-04-14 → 2026-07-05 · 3 obs

○ 2017-04-03 04:14:48
● 2026-04-14 09:05:56
● 2026-07-05 13:10:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	e.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp...	-
coderdojo.jp	ns2.gehirndns.jp, ns2.gehirndns.com, ns2.gehirndns.net, ns2.gehirndns.org	1 record

✅ Authoritative Response

Server:162.159.25.162

NS records: ns2.gehirndns.jp, ns2.gehirndns.com, ns2.gehirndns.net, ns2.gehirndns.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coderdojo.jp (unsigned zone)

⏱️ Timing

Total: 1288ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`99.83.220.108, 35.71.179.82...`
NS	4	`ns2.gehirndns.org, ns2.gehirndns.com...`
MX	5	`alt4.aspmx.l.google.com (pri: 10), alt2.aspmx.l.google.com (pri: 5)...`
TXT	7	`google-site-verification=hw_-60DqH13JG3K, v=spf1 +ip4:182.48.20.134/32 +a +include...`
SOA	1	`ns2.gehirndns.jp hostmaster.gehirn.co.jp`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns2.gehirndns.jp)

Analysis

IP Addresses

coderdojo.jp resolves to four IP addresses: 13.248.244.96, 35.71.179.82, 75.2.60.68 and 99.83.220.108.

limitless-dingo-tezgtndqs69uajvb6j9fy9sa.herokudns.com, lulaguide.com.herokudns.com, www.racingrulesofsailing.org.herokudns.com and two other host names share IP numbers with coderdojo.jp.

Name Servers

The authoritative name servers for coderdojo.jp are ns2.gehirndns.com, ns2.gehirndns.jp, ns2.gehirndns.net and ns2.gehirndns.org.

coderdojo.jp has at least partial name server overlap with other domains, such as tokyo-3.net, kzsystem.com, zucker.me and two others.

ns2.gehirndns.com, ns2.gehirndns.jp, ns2.gehirndns.net and ns2.gehirndns.org all point to exactly two IP numbers each: ns2.gehirndns.com → 162.159.24.140 and 2400:cb00:2049:1::a29f:188c; ns2.gehirndns.jp → 162.159.25.162 and 2400:cb00:2049:1::a29f:19a2; ns2.gehirndns.net → 162.159.25.169 and 2400:cb00:2049:1::a29f:19a9; ns2.gehirndns.org → 162.159.24.137 and 2400:cb00:2049:1::a29f:1889.

Mail Servers

coderdojo.jp is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

coderdojo.jp has at least partial mail server overlap with other domains such as ns500821.ns500794.ns500841.ns500841.ns500795.ns500794.ns500794.ns500794.ns500821.ns500795.ns500821.ns500795.ns500790.ns500795.lustypartnersfinder.com, 2masters.com.au, ns500731.ns500742.ns500754.ns500671.ns500754.ns500742.ns500688.ns500671.ns500671.ns500649.ns500671.ns500688.ns500291.ns500153.tenderladiesbz.com and two more.

These mail servers commonly appear together with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and two other mail servers.

Hostnames that resolve to two IP addresses:

aspmx.l.google.com directs traffic to 192.178.155.26 and 2607:f8b0:4004:c23::1a.

alt1.aspmx.l.google.com directs traffic to 172.217.216.26 and 2607:f8b0:4023:2803::1b.

alt2.aspmx.l.google.com directs traffic to 172.253.145.27 and 2607:f8b0:4023:3003::1a.

alt3.aspmx.l.google.com directs traffic to 172.253.135.26 and 2607:f8b0:4023:1015::1a.

alt4.aspmx.l.google.com directs traffic to 172.253.157.26 and 2a00:1450:400c:c23::1b.