responsivelearning.com - dns.ninja

`responsivelearning.com`

DNSSEC	⚠️ Not signed
A	44.236.168.83^{🇺🇸 Amazon44.224.0.0/11 EC2 PDX prefix}
		PTR	`ec2-44-236-168-83.us-west-2.compute.amazonaws.com`
A	52.36.235.90^{🇺🇸 Amazon52.36.0.0/14 EC2 PDX prefix}
NS	`ns-1272.awsdns-31.org` ⭐
		A	2600:9000:5304:f800::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1272.awsdns-31.org`
		A	205.251.196.248^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1272.awsdns-31.org`
NS	`ns-1878.awsdns-42.co.uk`
		A	2600:9000:5307:5600::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1878.awsdns-42.co.uk`
		A	205.251.199.86^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1878.awsdns-42.co.uk`
NS	`ns-378.awsdns-47.com`
		A	2600:9000:5301:7a00::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-378.awsdns-47.com`
		A	205.251.193.122^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-378.awsdns-47.com`
NS	`ns-781.awsdns-33.net`
		A	2600:9000:5303:d00::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-781.awsdns-33.net`
		A	205.251.195.13^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-781.awsdns-33.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c07::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bc-in-f26.1e100.net`
		A	142.251.167.27^{🇺🇸 Google142.251.167.0/24}
			PTR	`ww-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.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	172.253.116.27^{🇺🇸 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	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`google-site-verification=g8Xn3BuMZq11nnCjnjMp8ak7Twmj2y3vJvJTt1QFfTk`
TXT	`v=spf1 include:_spf.google.com include:amazonses.com ip4:50.112.158.20 ~all`
SOA	`ns-1272.awsdns-31.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=1783956077

Subdomains

mail.responsivelearning.com

courses.responsivelearning.com

coursescdn.responsivelearning.com

xapi-prd.responsivelearning.com

www.responsivelearning.com

Same first word

responsivelearning.com

DNS History

41 records (11 active, 30 former)

●NSns-1272.awsdns-31.org2026-02-21 → 2026-07-13 · 3 obs

○ 2016-09-08 06:59:28
● 2026-02-21 07:00:16
● 2026-07-13 15:48:48

●NSns-1878.awsdns-42.co.uk2026-02-21 → 2026-07-13 · 3 obs

○ 2016-09-08 06:59:28
● 2026-02-21 07:00:16
● 2026-07-13 15:48:48

●NSns-378.awsdns-47.com2026-02-21 → 2026-07-13 · 3 obs

○ 2016-09-08 06:59:28
● 2026-02-21 07:00:16
● 2026-07-13 15:48:48

●NSns-781.awsdns-33.net2026-02-21 → 2026-07-13 · 3 obs

○ 2016-09-08 06:59:28
● 2026-02-21 07:00:16
● 2026-07-13 15:48:48

○NSns0.directnic.com2015-06-08 → 2016-09-08 · 5 obs

○ 2008-03-17 00:12:26
● 2015-06-08 22:20:34
● 2016-09-08 06:59:28
○ 2026-02-21 07:00:16
○ 2026-07-13 15:48:48

○NSns1.directnic.com2015-06-08 → 2016-09-08 · 5 obs

○ 2008-03-17 00:12:26
● 2015-06-08 22:20:34
● 2016-09-08 06:59:28
○ 2026-02-21 07:00:16
○ 2026-07-13 15:48:48

○NSns10.dotnetsql.com2008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 00:12:26
○ 2015-06-08 22:20:34
○ 2026-07-13 15:48:48

○NSns9.dotnetsql.com2008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 00:12:26
○ 2015-06-08 22:20:34
○ 2026-07-13 15:48:48

●MXalt1.aspmx.l.google.com2015-06-08 → 2026-07-13 · 3 obs

○ 2008-03-17 00:12:26
● 2015-06-08 22:20:34
● 2026-07-13 15:48:48

●MXalt2.aspmx.l.google.com2015-06-08 → 2026-07-13 · 3 obs

○ 2008-03-17 00:12:26
● 2015-06-08 22:20:34
● 2026-07-13 15:48:48

●MXalt3.aspmx.l.google.com2026-02-21 → 2026-07-13 · 3 obs

○ 2016-09-08 06:59:28
● 2026-02-21 07:00:16
● 2026-07-13 15:48:48

●MXalt4.aspmx.l.google.com2026-02-21 → 2026-07-13 · 3 obs

○ 2016-09-08 06:59:28
● 2026-02-21 07:00:16
● 2026-07-13 15:48:48

●MXaspmx.l.google.com2015-06-08 → 2026-07-13 · 3 obs

○ 2008-03-17 00:12:26
● 2015-06-08 22:20:34
● 2026-07-13 15:48:48

○MXaspmx2.googlemail.com2015-06-08 → 2016-09-08 · 5 obs

○ 2008-03-17 00:12:26
● 2015-06-08 22:20:34
● 2016-09-08 06:59:28
○ 2026-02-21 07:00:16
○ 2026-07-13 15:48:48

○MXaspmx3.googlemail.com2015-06-08 → 2016-09-08 · 5 obs

○ 2008-03-17 00:12:26
● 2015-06-08 22:20:34
● 2016-09-08 06:59:28
○ 2026-02-21 07:00:16
○ 2026-07-13 15:48:48

○MXaspmx4.googlemail.com2015-06-08 → 2016-09-08 · 5 obs

○ 2008-03-17 00:12:26
● 2015-06-08 22:20:34
● 2016-09-08 06:59:28
○ 2026-02-21 07:00:16
○ 2026-07-13 15:48:48

○MXaspmx5.googlemail.com2015-06-08 → 2016-09-08 · 5 obs

○ 2008-03-17 00:12:26
● 2015-06-08 22:20:34
● 2016-09-08 06:59:28
○ 2026-02-21 07:00:16
○ 2026-07-13 15:48:48

○MXmail.responsivelearning.com2008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 00:12:26
○ 2015-06-08 22:20:34
○ 2026-07-13 15:48:48

○MXmail2.responsivelearning.com2008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 00:12:26
○ 2015-06-08 22:20:34
○ 2026-07-13 15:48:48

○MXmail3.responsivelearning.com2008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 00:12:26
○ 2015-06-08 22:20:34
○ 2026-07-13 15:48:48

○A184.33.88.72026-06-17 → 2026-06-17 · 4 obs

○ 2026-06-11 16:42:10
● 2026-06-17 14:22:24
○ 2026-07-03 05:21:12
○ 2026-07-13 15:48:48

○A192.254.232.2222015-06-08 → 2016-09-08 · 5 obs

○ 2008-03-17 00:12:26
● 2015-06-08 22:20:34
● 2016-09-08 06:59:28
○ 2026-02-21 07:00:16
○ 2026-07-13 15:48:48

○A35.81.154.2132026-03-23 → 2026-03-23 · 4 obs

○ 2026-02-28 12:16:54
● 2026-03-23 09:00:34
○ 2026-03-26 13:39:16
○ 2026-07-13 15:48:48

○A44.227.3.2372026-06-10 → 2026-06-11 · 5 obs

○ 2026-04-09 14:45:28
● 2026-06-10 16:37:04
● 2026-06-11 16:42:10
○ 2026-06-17 14:22:24
○ 2026-07-13 15:48:48

○A44.232.175.662026-02-21 → 2026-07-13 · 2 obs

○ 2026-02-21 07:00:16
○ 2026-07-13 15:48:48

●A44.236.168.832026-07-13 → 2026-07-13 · 3 obs

○ 2026-07-03 05:21:12
● 2026-07-13 15:48:46
● 2026-07-13 15:48:48

○A44.239.31.2462026-02-21 → 2026-02-28 · 5 obs

○ 2016-09-08 06:59:28
● 2026-02-21 07:00:16
● 2026-02-28 02:54:02
○ 2026-02-28 12:16:54
○ 2026-07-13 15:48:48

○A52.25.195.322026-02-28 → 2026-02-28 · 4 obs

○ 2026-02-28 02:54:02
● 2026-02-28 12:16:54
○ 2026-03-23 09:00:34
○ 2026-07-13 15:48:48

○A52.26.131.2302026-06-17 → 2026-06-17 · 4 obs

○ 2026-06-11 16:42:10
● 2026-06-17 14:22:24
○ 2026-07-03 05:21:12
○ 2026-07-13 15:48:48

○A52.35.186.1132026-06-10 → 2026-06-11 · 5 obs

○ 2026-04-09 14:45:28
● 2026-06-10 16:37:04
● 2026-06-11 16:42:10
○ 2026-06-17 14:22:24
○ 2026-07-13 15:48:48

●A52.36.235.902026-07-13 → 2026-07-13 · 3 obs

○ 2026-07-03 05:21:12
● 2026-07-13 15:48:46
● 2026-07-13 15:48:48

○A52.40.32.442026-07-03 → 2026-07-03 · 4 obs

○ 2026-06-17 14:22:24
● 2026-07-03 05:21:12
○ 2026-07-13 15:48:46
○ 2026-07-13 15:48:48

○A54.148.252.2142026-07-03 → 2026-07-03 · 4 obs

○ 2026-06-17 14:22:24
● 2026-07-03 05:21:12
○ 2026-07-13 15:48:46
○ 2026-07-13 15:48:48

○A54.186.105.1372026-02-26 → 2026-02-28 · 5 obs

○ 2026-02-21 07:00:16
● 2026-02-26 11:18:14
● 2026-02-28 12:16:54
○ 2026-03-23 09:00:34
○ 2026-07-13 15:48:48

○A54.203.253.2242026-03-26 → 2026-04-02 · 5 obs

○ 2026-03-23 09:00:34
● 2026-03-26 13:39:16
● 2026-04-02 16:32:36
○ 2026-04-09 04:00:08
○ 2026-07-13 15:48:48

○A54.213.45.1492026-02-21 → 2026-02-21 · 4 obs

○ 2016-09-08 06:59:28
● 2026-02-21 07:00:16
○ 2026-02-26 11:18:14
○ 2026-07-13 15:48:48

○A54.244.22.1842026-03-23 → 2026-04-02 · 5 obs

○ 2026-02-28 12:16:54
● 2026-03-23 09:00:34
● 2026-04-02 16:32:36
○ 2026-04-09 04:00:08
○ 2026-07-13 15:48:48

○A54.69.8.922026-04-09 → 2026-04-09 · 5 obs

○ 2026-04-02 16:32:36
● 2026-04-09 04:00:08
● 2026-04-09 14:45:28
○ 2026-06-10 16:37:04
○ 2026-07-13 15:48:48

○A54.70.225.132026-02-21 → 2026-07-13 · 2 obs

○ 2026-02-21 07:00:16
○ 2026-07-13 15:48:48

○A54.71.108.452026-04-09 → 2026-04-09 · 5 obs

○ 2026-04-02 16:32:36
● 2026-04-09 04:00:08
● 2026-04-09 14:45:28
○ 2026-06-10 16:37:04
○ 2026-07-13 15:48:48

○A70.85.46.182008-03-17 → 2008-03-17 · 3 obs

● 2008-03-17 00:12:26
○ 2015-06-08 22:20:34
○ 2026-07-13 15:48:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
responsivelearning.com	ns-378.awsdns-47.com, ns-781.awsdns-33.net, ns-1878.awsdns-42.co.uk, ns-1272.awsdns-31.org	2 records

✅ Authoritative Response

Server:205.251.196.248

NS records: ns-378.awsdns-47.com, ns-781.awsdns-33.net, ns-1878.awsdns-42.co.uk, ns-1272.awsdns-31.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for responsivelearning.com (unsigned zone)

⏱️ Timing

Total: 337ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`44.236.168.83, 52.36.235.90`
NS	4	`ns-1272.awsdns-31.org, ns-1878.awsdns-42.co.uk...`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	2	`google-site-verification=g8Xn3BuMZq11nnC, v=spf1 include:_spf.google.com include:a`
SOA	1	`ns-1272.awsdns-31.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-378.awsdns-47.com, ns-378.awsdns-47.com)

Analysis

Hierarchy

The domain responsivelearning.com serves as parent to mail.responsivelearning.com, courses.responsivelearning.com, coursescdn.responsivelearning.com, xapi-prd.responsivelearning.com and www.responsivelearning.com.

IP Addresses

responsivelearning.com has two IP addresses: 44.236.168.83 and 52.36.235.90

Name Servers

Four name servers handle the delegation for responsivelearning.com: ns-378.awsdns-47.com, ns-781.awsdns-33.net, ns-1272.awsdns-31.org and ns-1878.awsdns-42.co.uk.

At least some of responsivelearning.com's name servers are shared with other domains, for example autostay.co.kr, theadstock.net, bio-rad.ru and two more.

Four hostnames, each resolving to a pair of IP addresses: ns-378.awsdns-47.com directs to 205.251.193.122 and 2600:9000:5301:7a00::1; ns-781.awsdns-33.net directs to 205.251.195.13 and 2600:9000:5303:d00::1; ns-1272.awsdns-31.org directs to 205.251.196.248 and 2600:9000:5304:f800::1; ns-1878.awsdns-42.co.uk directs to 205.251.199.86 and 2600:9000:5307:5600::1.

Mail Servers

Five mail servers handle responsivelearning.com: 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 responsivelearning.com are shared with other domains: glidd.com, ns500731.ns500731.ns500754.ns500754.ns500731.ns500742.ns500704.ns500671.ns500705.ns500678.ns500671.lusty(0x736c7574)z.com, ns500742.ns500742.ns500671.ns500742.ns500731.ns500291.ns500291.ns500649.ns500666.ns500153.tenderladiesbz.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 has two IP addresses: 142.251.167.27 and 2607:f8b0:4004:c07::1a.

alt1.aspmx.l.google.com has two IP addresses: 108.177.123.27 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com has two IP addresses: 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com has two IP addresses: 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com has two IP addresses: 172.253.157.27 and 2a00:1450:400c:c23::1a.