knowledgehub.com - dns.ninja

`knowledgehub.com`

DNSSEC	⚠️ Not signed
A	13.59.77.0^{🇺🇸 Amazon13.58.0.0/15 EC2 CMH prefix}
		PTR	`ec2-13-59-77-0.us-east-2.compute.amazonaws.com`
A	16.58.232.165^{🇺🇸 Amazon16.58.128.0/17 EC2 Prefix}
NS	`ns-111.awsdns-13.com` ⭐ ⚠️ Not in parent delegation
		A	2600:9000:5300:6f00::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-111.awsdns-13.com`
		A	205.251.192.111^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-111.awsdns-13.com`
NS	`ns-1459.awsdns-54.org`
		A	2600:9000:5305:b300::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1459.awsdns-54.org`
		A	205.251.197.179^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1459.awsdns-54.org`
NS	`ns-2044.awsdns-63.co.uk`
		A	2600:9000:5307:fc00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-2044.awsdns-63.co.uk`
		A	205.251.199.252^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-2044.awsdns-63.co.uk`
NS	`ns-519.awsdns-00.net`
		A	2600:9000:5302:700::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-519.awsdns-00.net`
		A	205.251.194.7^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-519.awsdns-00.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c23::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f26.1e100.net`
		A	172.253.122.26^{🇺🇸 Google172.253.122.0/24}
			PTR	`bh-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`google-site-verification=rp9J6tkEpX_26gggqIH6JEGo0tDy3T8BpoX9-2xn7C8`
SOA	`ns-111.awsdns-13.com`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=1784161052

Subdomains

static.knowledgehub.com

www.knowledgehub.com

Same first word

Similar names

hubknowledge.ca

DNS History

26 records (11 active, 15 former)

●NSns-111.awsdns-13.com2026-02-17 → 2026-07-16 · 3 obs

○ 2017-07-07 11:36:52
● 2026-02-17 11:47:26
● 2026-07-16 00:31:28

●NSns-1459.awsdns-54.org2026-02-17 → 2026-07-16 · 3 obs

○ 2017-07-07 11:36:52
● 2026-02-17 11:47:26
● 2026-07-16 00:31:28

●NSns-2044.awsdns-63.co.uk2026-02-17 → 2026-07-16 · 3 obs

○ 2017-07-07 11:36:52
● 2026-02-17 11:47:26
● 2026-07-16 00:31:28

●NSns-519.awsdns-00.net2026-02-17 → 2026-07-16 · 3 obs

○ 2017-07-07 11:36:52
● 2026-02-17 11:47:26
● 2026-07-16 00:31:28

○NSns.rackspace.com2015-06-18 → 2017-07-07 · 4 obs

● 2015-06-18 10:09:18
● 2017-07-07 11:36:52
○ 2026-02-17 11:47:26
○ 2026-07-16 00:31:28

○NSns2.rackspace.com2015-06-18 → 2017-07-07 · 4 obs

● 2015-06-18 10:09:18
● 2017-07-07 11:36:52
○ 2026-02-17 11:47:26
○ 2026-07-16 00:31:28

●MXalt1.aspmx.l.google.com2016-11-08 → 2026-07-16 · 2 obs

● 2016-11-08 02:31:52
● 2026-07-16 00:31:28

●MXalt2.aspmx.l.google.com2016-11-08 → 2026-07-16 · 2 obs

● 2016-11-08 02:31:52
● 2026-07-16 00:31:28

●MXalt3.aspmx.l.google.com2016-11-08 → 2026-07-16 · 2 obs

● 2016-11-08 02:31:52
● 2026-07-16 00:31:28

●MXalt4.aspmx.l.google.com2016-11-08 → 2026-07-16 · 2 obs

● 2016-11-08 02:31:52
● 2026-07-16 00:31:28

●MXaspmx.l.google.com2016-11-08 → 2026-07-16 · 2 obs

● 2016-11-08 02:31:52
● 2026-07-16 00:31:28

●A13.59.77.02026-07-16 → 2026-07-16 · 3 obs

○ 2026-07-02 17:07:50
● 2026-07-16 00:31:26
● 2026-07-16 00:31:28

○A16.58.136.1822026-04-26 → 2026-04-26 · 4 obs

○ 2026-03-19 01:12:34
● 2026-04-26 11:27:50
○ 2026-06-26 10:44:08
○ 2026-07-16 00:31:28

●A16.58.232.1652026-07-16 → 2026-07-16 · 3 obs

○ 2026-07-02 17:07:50
● 2026-07-16 00:31:26
● 2026-07-16 00:31:28

○A18.116.134.2302026-06-26 → 2026-06-26 · 4 obs

○ 2026-04-26 11:27:50
● 2026-06-26 10:44:08
○ 2026-07-02 17:07:50
○ 2026-07-16 00:31:28

○A18.119.145.1482026-06-26 → 2026-06-26 · 4 obs

○ 2026-04-26 11:27:50
● 2026-06-26 10:44:08
○ 2026-07-02 17:07:50
○ 2026-07-16 00:31:28

○A18.189.12.2262026-02-17 → 2026-07-16 · 2 obs

○ 2026-02-17 11:47:26
○ 2026-07-16 00:31:28

○A18.217.105.1352026-07-02 → 2026-07-02 · 4 obs

○ 2026-06-26 10:44:08
● 2026-07-02 17:07:50
○ 2026-07-16 00:31:26
○ 2026-07-16 00:31:28

○A184.106.91.1572015-06-18 → 2017-07-07 · 4 obs

● 2015-06-18 10:09:18
● 2017-07-07 11:36:52
○ 2026-02-17 11:47:26
○ 2026-07-16 00:31:28

○A3.129.96.1192026-07-02 → 2026-07-02 · 4 obs

○ 2026-06-26 10:44:08
● 2026-07-02 17:07:50
○ 2026-07-16 00:31:26
○ 2026-07-16 00:31:28

○A3.131.165.1012026-02-17 → 2026-02-18 · 5 obs

○ 2017-07-07 11:36:52
● 2026-02-17 11:47:26
● 2026-02-18 23:02:00
○ 2026-03-19 01:12:34
○ 2026-07-16 00:31:28

○A3.140.102.302026-03-19 → 2026-03-19 · 4 obs

○ 2026-02-18 23:02:00
● 2026-03-19 01:12:34
○ 2026-04-26 11:27:50
○ 2026-07-16 00:31:28

○A3.147.139.222026-03-19 → 2026-03-19 · 4 obs

○ 2026-02-18 23:02:00
● 2026-03-19 01:12:34
○ 2026-04-26 11:27:50
○ 2026-07-16 00:31:28

○A3.151.147.2222026-02-17 → 2026-02-18 · 5 obs

○ 2017-07-07 11:36:52
● 2026-02-17 11:47:26
● 2026-02-18 23:02:00
○ 2026-03-19 01:12:34
○ 2026-07-16 00:31:28

○A3.151.224.2042026-04-26 → 2026-04-26 · 4 obs

○ 2026-03-19 01:12:34
● 2026-04-26 11:27:50
○ 2026-06-26 10:44:08
○ 2026-07-16 00:31:28

○A3.20.70.2022026-02-17 → 2026-07-16 · 2 obs

○ 2026-02-17 11:47:26
○ 2026-07-16 00:31:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
knowledgehub.com	ns-519.awsdns-00.net, ns-2044.awsdns-63.co.uk, ns-1459.awsdns-54.org	-

✅ Authoritative Response

Server:205.251.197.179

NS records: ns-519.awsdns-00.net, ns-2044.awsdns-63.co.uk, ns-1459.awsdns-54.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for knowledgehub.com (unsigned zone)

⏱️ Timing

Total: 485ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`16.58.232.165, 13.59.77.0`
NS	4	`ns-111.awsdns-13.com, ns-1459.awsdns-54.org...`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	1	`google-site-verification=rp9J6tkEpX_26gg`
SOA	1	`ns-111.awsdns-13.com awsdns-hostmaster.a`

Analysis

Hierarchy

knowledgehub.com serves as the parent of static.knowledgehub.com and www.knowledgehub.com.

IP Addresses

knowledgehub.com resolves to the IP addresses 13.59.77.0 and 16.58.232.165

Host names such as ec2-13-59-77-0.us-east-2.compute.amazonaws.com and kaplanlearn.com share IP numbers with knowledgehub.com.

Name Servers

Four name servers handle the delegation for knowledgehub.com: ns-111.awsdns-13.com, ns-519.awsdns-00.net, ns-1459.awsdns-54.org and ns-2044.awsdns-63.co.uk.

knowledgehub.com shares at least some of its name servers with other domains, including d3qbzo9imfqa8d.cloudfront.net, wpcrm.net, santabaseball.com and two others.

These name servers are frequently seen alongside the name servers ns-1774.awsdns-29.co.uk.

The host names ns-111.awsdns-13.com, ns-519.awsdns-00.net, ns-1459.awsdns-54.org and ns-2044.awsdns-63.co.uk each resolve to two IP addresses: ns-111.awsdns-13.com resolves to 205.251.192.111 and 2600:9000:5300:6f00::1; ns-519.awsdns-00.net resolves to 205.251.194.7 and 2600:9000:5302:700::1; ns-1459.awsdns-54.org resolves to 205.251.197.179 and 2600:9000:5305:b300::1; ns-2044.awsdns-63.co.uk resolves to 205.251.199.252 and 2600:9000:5307:fc00::1.

Mail Servers

knowledgehub.com is handled by five mail servers: 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 knowledgehub.com are shared with other domains: ns500731.ns500731.ns500671.ns500731.ns500742.ns500704.ns500705.ns500678.ns500688.ns500666.ns500131.lustychickser.com, ns500742.ns500671.ns500731.ns500742.ns500731.ns500671.ns500705.ns500678.ns500671.ns500678.ns500291.tenderladiesbz.com, ns500698.ns500698.ns500759.ns500698.ns500758.ns500698.ns500735.ns500698.ns500735.ns500576.ns500576.ns500619.ns500576.ns500576.ns500576.trackreceptor.com and two others among them.

It is common to find these mail servers paired with the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and aspmx2.googlemail.com, as well as two others.

Host names pointing to two IP addresses:

The A records for aspmx.l.google.com return 172.253.122.26 and 2607:f8b0:4004:c23::1a.

The A records for alt1.aspmx.l.google.com return 108.177.123.27 and 2800:3f0:4003:c0f::1a.

The A records for alt2.aspmx.l.google.com return 172.253.116.27 and 2a00:1450:400b:c02::1a.

The A records for alt3.aspmx.l.google.com return 192.178.223.27 and 2a00:1450:4009:c0f::1b.

The A records for alt4.aspmx.l.google.com return 172.253.157.26 and 2a00:1450:400c:c23::1a.