code4japan.org - dns.ninja

`code4japan.org`

DNSSEC	⚠️ Not signed
A	76.76.21.21^{🇺🇸 Amazon76.76.21.0/24 EC2 Prefix}
NS	`ns-1935.awsdns-49.co.uk` ⭐
		A	2600:9000:5307:8f00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1935.awsdns-49.co.uk`
		A	205.251.199.143^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1935.awsdns-49.co.uk`
NS	`ns-1385.awsdns-45.org`
		A	2600:9000:5305:6900::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1385.awsdns-45.org`
		A	205.251.197.105^{🇺🇸 Amazon205.251.197.0/24 prefix}
NS	`ns-228.awsdns-28.com`
		A	2600:9000:5300:e400::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-228.awsdns-28.com`
		A	205.251.192.228^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-228.awsdns-28.com`
NS	`ns-907.awsdns-49.net`
		A	2600:9000:5303:8b00::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-907.awsdns-49.net`
		A	205.251.195.139^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-907.awsdns-49.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1f::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pd-in-f27.1e100.net`
		A	142.251.163.27^{🇺🇸 Google142.251.163.0/24}
			PTR	`wv-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		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`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-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	`google-site-verification=ZYcFA2tU6eRPg2xE-_G2wY0Y5PoorcqwsRrO5xa_VT8`
TXT	`google-site-verification=cUi96xU6KE9BMaCartqhZpEyHyywwPWOrcSxMobYlkQ`
TXT	`google-site-verification=wXBVf-ygOR0E2KSveBQ05L6ruZGzWMjpQccd_nx3apQ`
TXT	`v=spf1 include:aspmx.googlemail.com ip4:18.180.197.160 include:spf.protection...`
SOA	`ns-1935.awsdns-49.co.uk`awsdns-hostmaster@amazon.com serial=1

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1783199046

rank #408119 globally
rank #31055 in the tld

Subdomains

hackday.code4japan.org

Same first word

code4japan.com

code4japan.org

DNS History

14 records (10 active, 4 former)

●NSns-1385.awsdns-45.org2026-05-04 → 2026-07-04 · 3 obs

○ 2017-04-05 10:48:48
● 2026-05-04 04:18:08
● 2026-07-04 21:30:32

●NSns-1935.awsdns-49.co.uk2026-05-04 → 2026-07-04 · 3 obs

○ 2017-04-05 10:48:48
● 2026-05-04 04:18:08
● 2026-07-04 21:30:32

●NSns-228.awsdns-28.com2026-05-04 → 2026-07-04 · 3 obs

○ 2017-04-05 10:48:48
● 2026-05-04 04:18:08
● 2026-07-04 21:30:32

●NSns-907.awsdns-49.net2026-05-04 → 2026-07-04 · 3 obs

○ 2017-04-05 10:48:48
● 2026-05-04 04:18:08
● 2026-07-04 21:30:32

○NSns1.value-domain.com2015-08-21 → 2017-04-05 · 4 obs

● 2015-08-21 21:02:16
● 2017-04-05 10:48:48
○ 2026-05-04 04:18:08
○ 2026-07-04 21:30:32

○NSns2.value-domain.com2015-08-21 → 2017-04-05 · 4 obs

● 2015-08-21 21:02:16
● 2017-04-05 10:48:48
○ 2026-05-04 04:18:08
○ 2026-07-04 21:30:32

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

○ 2017-04-05 10:48:48
● 2026-05-04 04:18:08
● 2026-07-04 21:30:32

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

○ 2017-04-05 10:48:48
● 2026-05-04 04:18:08
● 2026-07-04 21:30:32

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

○ 2017-04-05 10:48:48
● 2026-05-04 04:18:08
● 2026-07-04 21:30:32

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

○ 2017-04-05 10:48:48
● 2026-05-04 04:18:08
● 2026-07-04 21:30:32

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

○ 2017-04-05 10:48:48
● 2026-05-04 04:18:08
● 2026-07-04 21:30:32

○MXcode4japan-org.mail.protection.outlook.com2015-08-21 → 2017-04-05 · 4 obs

● 2015-08-21 21:02:16
● 2017-04-05 10:48:48
○ 2026-05-04 04:18:08
○ 2026-07-04 21:30:32

○A66.6.44.42015-08-21 → 2017-04-05 · 4 obs

● 2015-08-21 21:02:16
● 2017-04-05 10:48:48
○ 2026-05-04 04:18:08
○ 2026-07-04 21:30:32

●A76.76.21.212026-05-04 → 2026-07-04 · 3 obs

○ 2017-04-05 10:48:48
● 2026-05-04 04:18:08
● 2026-07-04 21:30:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
code4japan.org	ns-1935.awsdns-49.co.uk, ns-228.awsdns-28.com, ns-907.awsdns-49.net, ns-1385.awsdns-45.org	2 records

✅ Authoritative Response

Server:205.251.197.105

NS records: ns-1935.awsdns-49.co.uk, ns-228.awsdns-28.com, ns-907.awsdns-49.net, ns-1385.awsdns-45.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for code4japan.org (unsigned zone)

⏱️ Timing

Total: 684ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`76.76.21.21`
NS	4	`ns-1385.awsdns-45.org, ns-1935.awsdns-49.co.uk...`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	4	`google-site-verification=ZYcFA2tU6eRPg2x, google-site-verification=cUi96xU6KE9BMaC...`
SOA	1	`ns-1935.awsdns-49.co.uk awsdns-hostmaste`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-1385.awsdns-45.org, ns-1385.awsdns-45.org)

Analysis

Hierarchy

The domain hackday.code4japan.org falls under the parent code4japan.org.

IP Addresses

code4japan.org has exactly one IP address — 76.76.21.21.

turnbullinjurylaw.com, accelerate-for-jira.com, goelo.com plus two other host names have IP numbers in common with code4japan.org.

Name Servers

Four name servers handle the delegation for code4japan.org: ns-228.awsdns-28.com, ns-907.awsdns-49.net, ns-1385.awsdns-45.org and ns-1935.awsdns-49.co.uk.

At least some of code4japan.org's name servers are shared with other domains, for example embr.it, parachutebrewery.com, infohub.siemens-energy.cloud and two more.

Four hostnames, each resolving to a pair of IP addresses: ns-228.awsdns-28.com directs to 205.251.192.228 and 2600:9000:5300:e400::1; ns-907.awsdns-49.net directs to 205.251.195.139 and 2600:9000:5303:8b00::1; ns-1385.awsdns-45.org directs to 205.251.197.105 and 2600:9000:5305:6900::1; ns-1935.awsdns-49.co.uk directs to 205.251.199.143 and 2600:9000:5307:8f00::1.

Mail Servers

code4japan.org has five mail servers, which are aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

At least some of the mail servers used by code4japan.org are shared with other domains: ns500758.ns500758.ns500759.ns500698.ns500759.ns500698.ns500735.ns500698.ns500735.ns500698.ns500735.ns500576.ns500576.ns500576.ns500652.trackreceptor.com, ns500742.ns500754.ns500704.ns500704.ns500688.ns500688.ns500291.ns500291.ns500291.ns500291.ns500291.ns500131.lustychickser.com, ns500759.ns500758.ns500759.ns500758.ns500736.ns500735.ns500736.ns500736.ns500576.ns500708.ns500708.trackreceptor.com and two others among them.

These mail servers are often deployed together with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 other mail servers.

Host names pointing to two IP addresses:

aspmx.l.google.com points to 142.251.163.27 and 2607:f8b0:4004:c1f::1b.

alt1.aspmx.l.google.com points to 108.177.123.26 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com points to 172.253.116.26 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com points to 192.178.223.26 and 2a00:1450:4009:c0f::1a.

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