`challengescholars.com`

DNSSEC	⚠️ Not signed
A	143.244.214.156^{🇺🇸 DIGITALOCEAN143.244.212.0/22 DigitalOcean}
NS	`ns-1533.awsdns-63.org` ⭐
		A	2600:9000:5305:fd00::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1533.awsdns-63.org`
		A	205.251.197.253^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1533.awsdns-63.org`
NS	`ns-1720.awsdns-23.co.uk`
		A	2600:9000:5306:b800::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1720.awsdns-23.co.uk`
		A	205.251.198.184^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1720.awsdns-23.co.uk`
NS	`ns-733.awsdns-27.net`
		A	2600:9000:5302:dd00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-733.awsdns-27.net`
		A	205.251.194.221^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-733.awsdns-27.net`
NS	`ns-9.awsdns-01.com`
		A	2600:9000:5300:900::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-9.awsdns-01.com`
		A	205.251.192.9^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-9.awsdns-01.com`
SOA	`ns-1533.awsdns-63.org`awsdns-hostmaster@amazon.com serial=1

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1776014382

Same first word

challengescholars.com

DNS History

12 records (5 active, 7 former)

●NSns-1533.awsdns-63.org2026-03-29 → 2026-04-12 · 3 obs

○ 2018-10-01 00:18:50
● 2026-03-29 04:05:32
● 2026-04-12 17:35:40

●NSns-1720.awsdns-23.co.uk2026-03-29 → 2026-04-12 · 3 obs

○ 2018-10-01 00:18:50
● 2026-03-29 04:05:32
● 2026-04-12 17:35:40

●NSns-733.awsdns-27.net2026-03-29 → 2026-04-12 · 3 obs

○ 2018-10-01 00:18:50
● 2026-03-29 04:05:32
● 2026-04-12 17:35:40

●NSns-9.awsdns-01.com2026-03-29 → 2026-04-12 · 3 obs

○ 2018-10-01 00:18:50
● 2026-03-29 04:05:32
● 2026-04-12 17:35:40

○NSns1.dotster.com2017-02-01 → 2017-02-01 · 4 obs

○ 2016-06-22 03:14:16
● 2017-02-01 07:36:24
○ 2018-10-01 00:18:50
○ 2026-04-12 17:35:40

○NSns1.yourhostingaccount.com2015-07-21 → 2016-06-22 · 4 obs

● 2015-07-21 17:11:56
● 2016-06-22 03:14:16
○ 2017-02-01 07:36:24
○ 2026-04-12 17:35:40

○NSns2.dotster.com2017-02-01 → 2017-02-01 · 4 obs

○ 2016-06-22 03:14:16
● 2017-02-01 07:36:24
○ 2018-10-01 00:18:50
○ 2026-04-12 17:35:40

○NSns2.yourhostingaccount.com2015-07-21 → 2016-06-22 · 4 obs

● 2015-07-21 17:11:56
● 2016-06-22 03:14:16
○ 2017-02-01 07:36:24
○ 2026-04-12 17:35:40

○MXmx.challengescholars.com2015-07-21 → 2017-02-01 · 4 obs

● 2015-07-21 17:11:56
● 2017-02-01 07:36:24
○ 2018-10-01 00:18:50
○ 2026-04-12 17:35:40

●A143.244.214.1562026-03-29 → 2026-04-12 · 3 obs

○ 2018-10-01 00:18:50
● 2026-03-29 04:05:32
● 2026-04-12 17:35:40

○A66.96.161.1572017-02-01 → 2017-02-01 · 4 obs

○ 2015-07-21 17:11:56
● 2017-02-01 07:36:24
○ 2018-10-01 00:18:50
○ 2026-04-12 17:35:40

○A74.204.50.552015-07-21 → 2017-02-01 · 4 obs

● 2015-07-21 17:11:56
● 2017-02-01 07:36:24
○ 2018-10-01 00:18:50
○ 2026-04-12 17:35:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
challengescholars.com	ns-9.awsdns-01.com, ns-733.awsdns-27.net, ns-1720.awsdns-23.co.uk, ns-1533.awsdns-63.org	1 record

✅ Authoritative Response

Server:205.251.194.221

NS records: ns-9.awsdns-01.com, ns-733.awsdns-27.net, ns-1720.awsdns-23.co.uk, ns-1533.awsdns-63.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for challengescholars.com (unsigned zone)

⏱️ Timing

Total: 398ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`143.244.214.156`
NS	4	`ns-1533.awsdns-63.org, ns-1720.awsdns-23.co.uk...`
SOA	1	`ns-1533.awsdns-63.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-9.awsdns-01.com)

Analysis

IP Addresses

challengescholars.com points to a single IP: 143.244.214.156.

Name Servers

challengescholars.com's delegation is handled by four name servers: ns-9.awsdns-01.com, ns-733.awsdns-27.net, ns-1533.awsdns-63.org and ns-1720.awsdns-23.co.uk.

challengescholars.com partially shares name servers with other domains; examples include msgapp.com, eposte.ca, loyalldogfood.com, levnocestovani.cz and tbarron.xyz.

these name servers are commonly used with the name servers ns-2046.awsdns-63.co.uk.

Host names with two IPs:

ns-9.awsdns-01.com points to 2600:9000:5300:900::1 and 205.251.192.9

ns-733.awsdns-27.net points to 2600:9000:5302:dd00::1 and 205.251.194.221

ns-1533.awsdns-63.org points to 2600:9000:5305:fd00::1 and 205.251.197.253

ns-1720.awsdns-23.co.uk points to 2600:9000:5306:b800::1 and 205.251.198.184

challengescholars.com - robtex.com