hackerrankforwork.com - dns.ninja

`hackerrankforwork.com`

DNSSEC	⚠️ Not signed
A	3.217.69.74^{🇺🇸 Amazon3.208.0.0/12 EC2 IAD prefix}
		PTR	`ec2-3-217-69-74.compute-1.amazonaws.com`
A	32.196.148.17
A	44.199.171.237^{🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix}
A	52.7.119.19^{🇺🇸 Amazon52.4.0.0/14 EC2 IAD prefix}
NS	`ns-655.awsdns-17.net` ⭐
		A	2600:9000:5302:8f00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-655.awsdns-17.net`
		A	205.251.194.143^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-655.awsdns-17.net`
NS	`ns-1497.awsdns-59.org`
		A	2600:9000:5305:d900::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1497.awsdns-59.org`
		A	205.251.197.217^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1497.awsdns-59.org`
NS	`ns-15.awsdns-01.com`
		A	2600:9000:5300:f00::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-15.awsdns-01.com`
		A	205.251.192.15^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-15.awsdns-01.com`
NS	`ns-1908.awsdns-46.co.uk`
		A	2600:9000:5307:7400::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1908.awsdns-46.co.uk`
		A	205.251.199.116^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1908.awsdns-46.co.uk`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c23::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f26.1e100.net`
		A	192.178.155.26^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 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	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`aspmx2.googlemail.com`⁽¹⁰⁾
		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	`aspmx3.googlemail.com`⁽¹⁰⁾
		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`
TXT	`v=spf1 a mx include:spf.mtasv.net include:mail.zendesk.com include:_spf.sales...`
SOA	`ns-655.awsdns-17.net`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=1782077540

Subdomains

www.hackerrankforwork.com

support.hackerrankforwork.com

server1.hackerrankforwork.com

Same first word

hackerrankforwork.com

DNS History

36 records (13 active, 23 former)

●NSns-1497.awsdns-59.org2015-06-25 → 2026-06-21 · 2 obs

● 2015-06-25 10:43:30
● 2026-06-21 21:51:02

●NSns-15.awsdns-01.com2015-06-25 → 2026-06-21 · 2 obs

● 2015-06-25 10:43:30
● 2026-06-21 21:51:02

●NSns-1908.awsdns-46.co.uk2015-06-25 → 2026-06-21 · 2 obs

● 2015-06-25 10:43:30
● 2026-06-21 21:51:02

●NSns-655.awsdns-17.net2015-06-25 → 2026-06-21 · 2 obs

● 2015-06-25 10:43:30
● 2026-06-21 21:51:02

●MXalt1.aspmx.l.google.com2015-06-25 → 2026-06-21 · 2 obs

● 2015-06-25 10:43:30
● 2026-06-21 21:51:02

●MXalt2.aspmx.l.google.com2015-06-25 → 2026-06-21 · 2 obs

● 2015-06-25 10:43:30
● 2026-06-21 21:51:02

●MXaspmx.l.google.com2015-06-25 → 2026-06-21 · 2 obs

● 2015-06-25 10:43:30
● 2026-06-21 21:51:02

●MXaspmx2.googlemail.com2015-06-25 → 2026-06-21 · 2 obs

● 2015-06-25 10:43:30
● 2026-06-21 21:51:02

●MXaspmx3.googlemail.com2015-06-25 → 2026-06-21 · 2 obs

● 2015-06-25 10:43:30
● 2026-06-21 21:51:02

○A100.29.223.392026-06-10 → 2026-06-10 · 4 obs

○ 2026-04-29 21:21:44
● 2026-06-10 05:18:54
○ 2026-06-16 22:50:10
○ 2026-06-21 21:51:02

○A100.30.138.1762026-03-09 → 2026-03-13 · 5 obs

○ 2026-02-26 08:10:00
● 2026-03-09 06:06:32
● 2026-03-13 05:24:00
○ 2026-04-24 19:39:44
○ 2026-06-21 21:51:02

○A100.48.233.2512026-02-26 → 2026-06-21 · 2 obs

○ 2026-02-26 08:10:00
○ 2026-06-21 21:51:02

○A100.49.49.682026-03-09 → 2026-03-13 · 5 obs

○ 2026-02-26 08:10:00
● 2026-03-09 06:06:32
● 2026-03-13 05:24:00
○ 2026-04-24 19:39:44
○ 2026-06-21 21:51:02

○A100.51.94.2002026-02-26 → 2026-06-21 · 2 obs

○ 2026-02-26 08:10:00
○ 2026-06-21 21:51:02

○A13.219.121.232026-02-26 → 2026-06-21 · 2 obs

○ 2026-02-26 08:10:00
○ 2026-06-21 21:51:02

●A3.217.69.742026-06-16 → 2026-06-21 · 3 obs

○ 2026-06-10 05:18:54
● 2026-06-16 22:50:10
● 2026-06-21 21:51:02

○A3.222.164.1342026-03-09 → 2026-03-13 · 5 obs

○ 2026-02-26 08:10:00
● 2026-03-09 06:06:32
● 2026-03-13 05:24:00
○ 2026-04-24 19:39:44
○ 2026-06-21 21:51:02

○A3.227.165.1092026-03-09 → 2026-03-13 · 5 obs

○ 2026-02-26 08:10:00
● 2026-03-09 06:06:32
● 2026-03-13 05:24:00
○ 2026-04-24 19:39:44
○ 2026-06-21 21:51:02

○A3.227.45.1062026-04-24 → 2026-04-24 · 5 obs

○ 2026-03-13 05:24:00
● 2026-04-24 19:39:44
● 2026-04-24 22:29:40
○ 2026-04-29 10:52:20
○ 2026-06-21 21:51:02

○A32.196.100.1992026-04-24 → 2026-04-29 · 5 obs

○ 2026-03-13 05:24:00
● 2026-04-24 19:39:44
● 2026-04-29 21:21:44
○ 2026-06-10 05:18:54
○ 2026-06-21 21:51:02

●A32.196.148.172026-06-16 → 2026-06-21 · 3 obs

○ 2026-06-10 05:18:54
● 2026-06-16 22:50:10
● 2026-06-21 21:51:02

○A34.231.139.722026-06-10 → 2026-06-10 · 4 obs

○ 2026-04-29 21:21:44
● 2026-06-10 05:18:54
○ 2026-06-16 22:50:10
○ 2026-06-21 21:51:02

●A44.199.171.2372026-06-16 → 2026-06-21 · 3 obs

○ 2026-06-10 05:18:54
● 2026-06-16 22:50:10
● 2026-06-21 21:51:02

○A44.206.97.2432026-02-26 → 2026-06-21 · 2 obs

○ 2026-02-26 08:10:00
○ 2026-06-21 21:51:02

○A44.217.158.982026-04-29 → 2026-04-29 · 5 obs

○ 2026-04-24 22:29:40
● 2026-04-29 10:52:20
● 2026-04-29 21:21:44
○ 2026-06-10 05:18:54
○ 2026-06-21 21:51:02

○A52.1.240.682026-04-24 → 2026-04-29 · 5 obs

○ 2026-03-13 05:24:00
● 2026-04-24 19:39:44
● 2026-04-29 21:21:44
○ 2026-06-10 05:18:54
○ 2026-06-21 21:51:02

○A52.20.239.152026-04-29 → 2026-04-29 · 5 obs

○ 2026-04-24 22:29:40
● 2026-04-29 10:52:20
● 2026-04-29 21:21:44
○ 2026-06-10 05:18:54
○ 2026-06-21 21:51:02

○A52.200.234.2462026-02-26 → 2026-02-26 · 4 obs

○ 2018-08-18 02:52:36
● 2026-02-26 08:10:00
○ 2026-03-09 06:06:32
○ 2026-06-21 21:51:02

○A52.4.212.1742026-02-26 → 2026-02-26 · 4 obs

○ 2018-08-18 02:52:36
● 2026-02-26 08:10:00
○ 2026-03-09 06:06:32
○ 2026-06-21 21:51:02

○A52.5.0.1632026-04-24 → 2026-04-24 · 5 obs

○ 2026-03-13 05:24:00
● 2026-04-24 19:39:44
● 2026-04-24 22:29:40
○ 2026-04-29 10:52:20
○ 2026-06-21 21:51:02

○A52.54.186.282026-06-10 → 2026-06-10 · 4 obs

○ 2026-04-29 21:21:44
● 2026-06-10 05:18:54
○ 2026-06-16 22:50:10
○ 2026-06-21 21:51:02

●A52.7.119.192026-06-21 → 2026-06-21 · 2 obs

○ 2026-06-16 22:50:10
● 2026-06-21 21:51:02

○A54.160.192.212026-06-10 → 2026-06-16 · 4 obs

○ 2026-04-29 21:21:44
● 2026-06-10 05:18:54
● 2026-06-16 22:50:10
○ 2026-06-21 21:51:02

○A54.86.134.232026-02-26 → 2026-02-26 · 4 obs

○ 2018-08-18 02:52:36
● 2026-02-26 08:10:00
○ 2026-03-09 06:06:32
○ 2026-06-21 21:51:02

○A54.87.163.522026-02-26 → 2026-02-26 · 4 obs

○ 2018-08-18 02:52:36
● 2026-02-26 08:10:00
○ 2026-03-09 06:06:32
○ 2026-06-21 21:51:02

○A74.207.232.1462015-06-25 → 2018-08-18 · 4 obs

● 2015-06-25 10:43:30
● 2018-08-18 02:52:36
○ 2026-02-26 08:10:00
○ 2026-06-21 21:51:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
hackerrankforwork.com	ns-15.awsdns-01.com, ns-655.awsdns-17.net, ns-1908.awsdns-46.co.uk, ns-1497.awsdns-59.org	2 records

✅ Authoritative Response

Server:205.251.197.217

NS records: ns-15.awsdns-01.com, ns-655.awsdns-17.net, ns-1908.awsdns-46.co.uk, ns-1497.awsdns-59.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for hackerrankforwork.com (unsigned zone)

⏱️ Timing

Total: 370ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`32.196.148.17, 52.7.119.19...`
NS	4	`ns-1497.awsdns-59.org, ns-15.awsdns-01.com...`
MX	5	`aspmx.l.google.com (pri: 1), aspmx2.googlemail.com (pri: 10)...`
TXT	1	`v=spf1 a mx include:spf.mtasv.net includ`
SOA	1	`ns-655.awsdns-17.net awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-15.awsdns-01.com, ns-15.awsdns-01.com)

Analysis

Hierarchy

hackerrankforwork.com sits above www.hackerrankforwork.com, support.hackerrankforwork.com and server1.hackerrankforwork.com in the domain hierarchy.

IP Addresses

hackerrankforwork.com points to the four IP addresses 3.217.69.74, 32.196.148.17, 44.199.171.237 and 52.7.119.19.

Other hosts including ec2-44-199-171-237.compute-1.amazonaws.com, ec2-3-217-69-74.compute-1.amazonaws.com and hackerrank.com share IP addresses with hackerrankforwork.com.

Name Servers

Four name servers handle the delegation for hackerrankforwork.com: ns-15.awsdns-01.com, ns-655.awsdns-17.net, ns-1497.awsdns-59.org and ns-1908.awsdns-46.co.uk.

There is at least partial name server overlap between hackerrankforwork.com and other domains — katharinadamm.com, gyrohousestlouis.com, nathaniel-adams.com and two more among them.

All four hostnames — ns-15.awsdns-01.com, ns-655.awsdns-17.net, ns-1497.awsdns-59.org and ns-1908.awsdns-46.co.uk — resolve to two IP numbers apiece: ns-15.awsdns-01.com to 205.251.192.15 and 2600:9000:5300:f00::1; ns-655.awsdns-17.net to 205.251.194.143 and 2600:9000:5302:8f00::1; ns-1497.awsdns-59.org to 205.251.197.217 and 2600:9000:5305:d900::1; ns-1908.awsdns-46.co.uk to 205.251.199.116 and 2600:9000:5307:7400::1.

Mail Servers

hackerrankforwork.com has five mail servers, which are aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.

At least some of the mail servers used by hackerrankforwork.com are shared with other domains: bins.ca, faros.com.br, ns500758.ns500758.ns500759.ns500759.ns500735.ns500736.ns500698.ns500698.ns500708.ns500708.ns500698.ns500652.ns500576.trackreceptor.com and two others among them.

These mail servers are often deployed together with alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 other mail servers.

Host names pointing to two IP addresses:

The A records for aspmx2.googlemail.com return 108.177.123.27 and 2800:3f0:4003:c0f::1a.

The A records for aspmx3.googlemail.com return 172.253.116.27 and 2a00:1450:400b:c02::1a.

The A records for aspmx.l.google.com return 192.178.155.26 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::1b.

The A records for alt2.aspmx.l.google.com return 172.253.116.26 and 2a00:1450:400b:c02::1a.

aspmx2.googlemail.com and alt1.aspmx.l.google.com each have 108.177.123.27 IP addresses.

aspmx3.googlemail.com and alt2.aspmx.l.google.com each have 2a00:1450:400b:c02::1a IP addresses.