code4j.org - dns.ninja

`code4j.org`

DNSSEC	⚠️ Not signed
A	3.64.55.35^{🇩🇪 Amazon3.64.0.0/12 EC2 FRA Prefix}
		PTR	`ec2-3-64-55-35.eu-central-1.compute.amazonaws.com`
NS	`ns-1581.awsdns-05.co.uk` ⭐
		A	2600:9000:5306:2d00::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1581.awsdns-05.co.uk`
		A	205.251.198.45^{🇺🇸 Amazon205.251.198.0/24 prefix}
NS	`ns-1362.awsdns-42.org`
		A	2600:9000:5305:5200::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1362.awsdns-42.org`
		A	205.251.197.82^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1362.awsdns-42.org`
NS	`ns-299.awsdns-37.com`
		A	2600:9000:5301:2b00::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-299.awsdns-37.com`
		A	205.251.193.43^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-299.awsdns-37.com`
NS	`ns-983.awsdns-58.net`
		A	2600:9000:5303:d700::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-983.awsdns-58.net`
		A	205.251.195.215^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-983.awsdns-58.net`
SOA	`ns-1581.awsdns-05.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=1783198716

Same first word

code4j.com

code4j.org

code4j.workers.dev

DNS History

10 records (5 active, 5 former)

●NSns-1362.awsdns-42.org2026-02-18 → 2026-07-04 · 3 obs

○ 2016-12-16 11:22:30
● 2026-02-18 12:30:52
● 2026-07-04 21:13:24

●NSns-1581.awsdns-05.co.uk2026-02-18 → 2026-07-04 · 3 obs

○ 2016-12-16 11:22:30
● 2026-02-18 12:30:52
● 2026-07-04 21:13:24

●NSns-299.awsdns-37.com2026-02-18 → 2026-07-04 · 3 obs

○ 2016-12-16 11:22:30
● 2026-02-18 12:30:52
● 2026-07-04 21:13:24

●NSns-983.awsdns-58.net2026-02-18 → 2026-07-04 · 3 obs

○ 2016-12-16 11:22:30
● 2026-02-18 12:30:52
● 2026-07-04 21:13:24

○NSns1.ogicom.pl2015-10-17 → 2015-12-10 · 4 obs

● 2015-10-17 05:10:40
● 2015-12-10 15:00:42
○ 2016-12-16 11:22:30
○ 2026-07-04 21:13:24

○NSns2.ogicom.pl2015-10-17 → 2015-12-10 · 4 obs

● 2015-10-17 05:10:40
● 2015-12-10 15:00:42
○ 2016-12-16 11:22:30
○ 2026-07-04 21:13:24

○NSns3.ogicom.pl2015-10-17 → 2015-12-10 · 4 obs

● 2015-10-17 05:10:40
● 2015-12-10 15:00:42
○ 2016-12-16 11:22:30
○ 2026-07-04 21:13:24

○MXmx.code4j.org2015-10-17 → 2015-12-10 · 4 obs

● 2015-10-17 05:10:40
● 2015-12-10 15:00:42
○ 2016-12-16 11:22:30
○ 2026-07-04 21:13:24

●A3.64.55.352026-02-18 → 2026-07-04 · 3 obs

○ 2016-12-16 11:22:30
● 2026-02-18 12:30:52
● 2026-07-04 21:13:24

○A93.157.100.532015-10-17 → 2015-12-10 · 4 obs

● 2015-10-17 05:10:40
● 2015-12-10 15:00:42
○ 2016-12-16 11:22:30
○ 2026-07-04 21:13:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
code4j.org	ns-299.awsdns-37.com, ns-1362.awsdns-42.org, ns-983.awsdns-58.net, ns-1581.awsdns-05.co.uk	2 records

✅ Authoritative Response

Server:205.251.195.215

NS records: ns-299.awsdns-37.com, ns-1362.awsdns-42.org, ns-983.awsdns-58.net, ns-1581.awsdns-05.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for code4j.org (unsigned zone)

⏱️ Timing

Total: 1103ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`3.64.55.35`
NS	4	`ns-1362.awsdns-42.org, ns-1581.awsdns-05.co.uk...`
SOA	1	`ns-1581.awsdns-05.co.uk awsdns-hostmaste`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-1362.awsdns-42.org, ns-1362.awsdns-42.org)

Analysis

IP Addresses

code4j.org resolves to just one IP address, 3.64.55.35.

Name Servers

The NS records for code4j.org point to four name servers: ns-299.awsdns-37.com, ns-983.awsdns-58.net, ns-1362.awsdns-42.org and ns-1581.awsdns-05.co.uk.

code4j.org shares at least some of its name servers with other domains, including anagodb.org, cloud.aofund.org, abt.aquasites.net and two others.

The host names ns-299.awsdns-37.com, ns-983.awsdns-58.net, ns-1362.awsdns-42.org and ns-1581.awsdns-05.co.uk each resolve to two IP addresses: ns-299.awsdns-37.com resolves to 205.251.193.43 and 2600:9000:5301:2b00::1; ns-983.awsdns-58.net resolves to 205.251.195.215 and 2600:9000:5303:d700::1; ns-1362.awsdns-42.org resolves to 205.251.197.82 and 2600:9000:5305:5200::1; ns-1581.awsdns-05.co.uk resolves to 205.251.198.45 and 2600:9000:5306:2d00::1.