`skillbuilder.org`

DNSSEC	⚠️ Not signed
A	75.2.127.147^{🇺🇸 Amazon75.2.112.0/20}
		PTR	`abad4d10cf6f94c47.awsglobalaccelerator.com`
A	99.83.255.24^{🇺🇸 Amazon99.83.240.0/20}
NS	`ns-1135.awsdns-13.org` ⭐
		A	2600:9000:5304:6f00::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1135.awsdns-13.org`
		A	205.251.196.111^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1135.awsdns-13.org`
NS	`ns-116.awsdns-14.com`
		A	2600:9000:5300:7400::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-116.awsdns-14.com`
		A	205.251.192.116^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-116.awsdns-14.com`
NS	`ns-2005.awsdns-58.co.uk`
		A	2600:9000:5307:d500::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-2005.awsdns-58.co.uk`
		A	205.251.199.213^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-2005.awsdns-58.co.uk`
NS	`ns-799.awsdns-35.net`
		A	2600:9000:5303:1f00::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-799.awsdns-35.net`
		A	205.251.195.31^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-799.awsdns-35.net`
TXT	`v=DMARC1; p=none`
SOA	`ns-1135.awsdns-13.org`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=1783087461

Same first word

skillbuilder.net

skillbuilder.ca

skillbuilder.com

skillbuilder.org

skillbuilder.io

skillbuilder.co

skillbuilder.in

skillbuilder.aws

DNS History

20 records (6 active, 14 former)

○NSdns1.name-services.com2015-05-19 → 2017-02-05 · 4 obs

● 2015-05-19 21:10:58
● 2017-02-05 02:16:22
○ 2018-10-18 04:21:58
○ 2026-07-03 14:33:22

○NSdns2.name-services.com2015-05-19 → 2017-02-05 · 4 obs

● 2015-05-19 21:10:58
● 2017-02-05 02:16:22
○ 2018-10-18 04:21:58
○ 2026-07-03 14:33:22

○NSdns3.name-services.com2015-05-19 → 2017-02-05 · 4 obs

● 2015-05-19 21:10:58
● 2017-02-05 02:16:22
○ 2018-10-18 04:21:58
○ 2026-07-03 14:33:22

○NSdns4.name-services.com2015-05-19 → 2017-02-05 · 4 obs

● 2015-05-19 21:10:58
● 2017-02-05 02:16:22
○ 2018-10-18 04:21:58
○ 2026-07-03 14:33:22

○NSdns5.name-services.com2015-05-19 → 2017-02-05 · 4 obs

● 2015-05-19 21:10:58
● 2017-02-05 02:16:22
○ 2018-10-18 04:21:58
○ 2026-07-03 14:33:22

●NSns-1135.awsdns-13.org2026-04-28 → 2026-07-03 · 3 obs

○ 2018-10-18 04:21:58
● 2026-04-28 12:40:06
● 2026-07-03 14:33:22

●NSns-116.awsdns-14.com2026-04-28 → 2026-07-03 · 3 obs

○ 2018-10-18 04:21:58
● 2026-04-28 12:40:06
● 2026-07-03 14:33:22

○NSns-1476.awsdns-56.org2026-04-28 → 2026-07-03 · 2 obs

○ 2026-04-28 12:40:06
○ 2026-07-03 14:33:22

○NSns-1824.awsdns-36.co.uk2026-04-28 → 2026-07-03 · 2 obs

○ 2026-04-28 12:40:06
○ 2026-07-03 14:33:22

●NSns-2005.awsdns-58.co.uk2026-04-28 → 2026-07-03 · 3 obs

○ 2018-10-18 04:21:58
● 2026-04-28 12:40:06
● 2026-07-03 14:33:22

○NSns-424.awsdns-53.com2026-04-28 → 2026-07-03 · 2 obs

○ 2026-04-28 12:40:06
○ 2026-07-03 14:33:22

●NSns-799.awsdns-35.net2026-04-28 → 2026-07-03 · 3 obs

○ 2018-10-18 04:21:58
● 2026-04-28 12:40:06
● 2026-07-03 14:33:22

○NSns-985.awsdns-59.net2026-04-28 → 2026-07-03 · 2 obs

○ 2026-04-28 12:40:06
○ 2026-07-03 14:33:22

○NSns1.namefind.com2018-10-18 → 2018-10-18 · 4 obs

○ 2017-02-05 02:16:22
● 2018-10-18 04:21:58
○ 2026-04-28 12:40:06
○ 2026-07-03 14:33:22

○NSns2.namefind.com2018-10-18 → 2018-10-18 · 4 obs

○ 2017-02-05 02:16:22
● 2018-10-18 04:21:58
○ 2026-04-28 12:40:06
○ 2026-07-03 14:33:22

○MXp.nsm.ctmail.com2015-05-19 → 2016-02-08 · 4 obs

● 2015-05-19 21:10:58
● 2016-02-08 05:40:36
○ 2016-06-18 20:24:06
○ 2026-07-03 14:33:22

○A68.178.213.612018-10-18 → 2018-10-18 · 4 obs

○ 2017-02-05 02:16:22
● 2018-10-18 04:21:58
○ 2026-04-28 12:40:06
○ 2026-07-03 14:33:22

●A75.2.127.1472026-04-28 → 2026-07-03 · 3 obs

○ 2018-10-18 04:21:58
● 2026-04-28 12:40:06
● 2026-07-03 14:33:22

○A8.5.1.412015-05-19 → 2017-02-05 · 4 obs

● 2015-05-19 21:10:58
● 2017-02-05 02:16:22
○ 2018-10-18 04:21:58
○ 2026-07-03 14:33:22

●A99.83.255.242026-04-28 → 2026-07-03 · 3 obs

○ 2018-10-18 04:21:58
● 2026-04-28 12:40:06
● 2026-07-03 14:33:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
skillbuilder.org	ns-2005.awsdns-58.co.uk, ns-1135.awsdns-13.org, ns-116.awsdns-14.com, ns-799.awsdns-35.net	2 records

✅ Authoritative Response

Server:205.251.199.213

NS records: ns-2005.awsdns-58.co.uk, ns-1135.awsdns-13.org, ns-116.awsdns-14.com, ns-799.awsdns-35.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for skillbuilder.org (unsigned zone)

⏱️ Timing

Total: 547ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`75.2.127.147, 99.83.255.24`
NS	4	`ns-1135.awsdns-13.org, ns-116.awsdns-14.com...`
TXT	1	`v=DMARC1; p=none`
SOA	1	`ns-1135.awsdns-13.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-1135.awsdns-13.org, ns-1135.awsdns-13.org)

Analysis

IP Addresses

skillbuilder.org directs to two IP numbers, 75.2.127.147 and 99.83.255.24

Other host names, such as abad4d10cf6f94c47.awsglobalaccelerator.com, share IP numbers with skillbuilder.org.

Name Servers

The NS records for skillbuilder.org point to four name servers: ns-116.awsdns-14.com, ns-799.awsdns-35.net, ns-1135.awsdns-13.org and ns-2005.awsdns-58.co.uk.

skillbuilder.org shares at least some of its name servers with other domains, including cupixapis.com, hzro31.com, leaderisland.com and two others.

The host names ns-116.awsdns-14.com, ns-799.awsdns-35.net, ns-1135.awsdns-13.org and ns-2005.awsdns-58.co.uk each resolve to two IP addresses: ns-116.awsdns-14.com resolves to 205.251.192.116 and 2600:9000:5300:7400::1; ns-799.awsdns-35.net resolves to 205.251.195.31 and 2600:9000:5303:1f00::1; ns-1135.awsdns-13.org resolves to 205.251.196.111 and 2600:9000:5304:6f00::1; ns-2005.awsdns-58.co.uk resolves to 205.251.199.213 and 2600:9000:5307:d500::1.

skillbuilder.org - robtex.com