`stcusa.com`

DNSSEC	⚠️ Not signed
A	3.95.125.38^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
		PTR	`ec2-3-95-125-38.compute-1.amazonaws.com`
A	35.153.82.117^{🇺🇸 Amazon35.153.0.0/16 EC2 IAD prefix}
A	98.94.118.125^{🇺🇸 Amazon98.88.0.0/13 EC2 IAD prefix}
NS	`ns-1259.awsdns-29.org` ⭐
		A	2600:9000:5304:eb00::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1259.awsdns-29.org`
		A	205.251.196.235^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1259.awsdns-29.org`
NS	`ns-2022.awsdns-60.co.uk`
		A	2600:9000:5307:e600::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-2022.awsdns-60.co.uk`
		A	205.251.199.230^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-2022.awsdns-60.co.uk`
NS	`ns-288.awsdns-36.com`
		A	2600:9000:5301:2000::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-288.awsdns-36.com`
		A	205.251.193.32^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-288.awsdns-36.com`
NS	`ns-552.awsdns-05.net`
		A	2600:9000:5302:2800::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-552.awsdns-05.net`
		A	205.251.194.40^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-552.awsdns-05.net`
MX	`d117561a.ess.barracudanetworks.com` ⭐
		A	209.222.82.252^{🇺🇸 Amazon209.222.82.0/24 EC2 Prefix}
			PTR	`mail.ess.barracuda.com`
		A	209.222.82.253^{🇺🇸 Amazon209.222.82.0/24 EC2 Prefix}
			PTR	`mail.ess.barracuda.com`
		A	209.222.82.255^{🇺🇸 Amazon209.222.82.0/24 EC2 Prefix}
			PTR	`mail.ess.barracuda.com`
MX	`d117561b.ess.barracudanetworks.com`⁽²⁰⁾
		A	209.222.82.252^{🇺🇸 Amazon209.222.82.0/24 EC2 Prefix}
			PTR	`mail.ess.barracuda.com`
		A	209.222.82.253^{🇺🇸 Amazon209.222.82.0/24 EC2 Prefix}
			PTR	`mail.ess.barracuda.com`
		A	209.222.82.255^{🇺🇸 Amazon209.222.82.0/24 EC2 Prefix}
			PTR	`mail.ess.barracuda.com`
TXT	`MS=ms80988196`
TXT	`amazonses:SoMYIRR4y9AykHk/xa8VOfcuRhnUX2GGL79MZLspX4Q=`
TXT	`facebook-domain-verification=9r7b0vrr00k7uxmz9byuraazhqqj0a`
TXT	`google-site-verification=D7fZeZYBC-EZMZBQy3EdosXeikC_8uyctQczswxHedU`
TXT	`google-site-verification=OPZG12VrfDmHkgbn-LCw5l4CcrMi6BExEdvXjHTVM8k`
TXT	`google-site-verification=X3Gv8FS6CPemz7tAEigM2EwO8Ol0N8gcNAaSNH55BLA`
TXT	`google-site-verification=aDk_1Z8hYNaWxxo9b0pznpbe2E2o-aedbXufwm1FShA`
TXT	`v=spf1 include:spf.protection.outlook.com include:amazonses.com include:spf.e...`
TXT	`webexdomainverification.4C675B8B71FCB136E053AB06FC0A3F65=98eeced4-3302-412b-b...`
SOA	`ns-1259.awsdns-29.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=1775929767

rank #827724 globally
rank #375510 in the tld
WOT: SAFE (60/100)
📈 Tranco rank: #188,684

Subdomains

www.stcusa.com

vc5.stcusa.com

api-ms.stcusa.com

studentapi.stcusa.com

mail.stcusa.com

info.stcusa.com

my.stcusa.com

checkout.stcusa.com

Same first word

stcusa.co

stcusa.com

Similar names

cstusa.biz

castus.co.uk

cassut.com

castus.in

castus.ch

castus.ru

castus.de

castus.dk

tsscau.com

scusta.com

utcssa.com

catsus.com

castus.net

tucass.com

utcssa.ca

tcsusa.com

castus.me

usastc.org

tscusa.org

custas.vn

csaust.com

ctsusa.us

utcssa.net

castus.eu

suscat.com

castus.se

sustac.com

usastc.us

castus.at

sctusa.com

castus.hr

uscast.net

ctsusa.org

castus.tv

sactus.com

ucasts.com

cussat.com

actsus.com

scaust.com.au

castus.info

satcus.com

castus.co

castus.pro

uscast.com

sucast.com

castus.org

castus.com

ctsusa.com

usastc.mobi

usastc.net

uscast.org

actsus.org

castus.pl

DNS History

33 records (9 active, 24 former)

○NSdbru.br.ns.els-gms.att.net2015-08-15 → 2016-10-21 · 4 obs

● 2015-08-15 17:20:16
● 2016-10-21 05:23:46
○ 2020-07-13 18:11:14
○ 2026-04-11 18:00:34

○NSdmtu.mt.ns.els-gms.att.net2015-08-15 → 2016-10-21 · 4 obs

● 2015-08-15 17:20:16
● 2016-10-21 05:23:46
○ 2020-07-13 18:11:14
○ 2026-04-11 18:00:34

●NSns-1259.awsdns-29.org2020-07-13 → 2026-04-11 · 3 obs

○ 2016-10-21 05:23:46
● 2020-07-13 18:11:14
● 2026-04-11 18:00:34

●NSns-2022.awsdns-60.co.uk2020-07-13 → 2026-04-11 · 3 obs

○ 2016-10-21 05:23:46
● 2020-07-13 18:11:14
● 2026-04-11 18:00:34

●NSns-288.awsdns-36.com2020-07-13 → 2026-04-11 · 3 obs

○ 2016-10-21 05:23:46
● 2020-07-13 18:11:14
● 2026-04-11 18:00:34

●NSns-552.awsdns-05.net2020-07-13 → 2026-04-11 · 3 obs

○ 2016-10-21 05:23:46
● 2020-07-13 18:11:14
● 2026-04-11 18:00:34

●MXd117561a.ess.barracudanetworks.com2020-07-13 → 2026-04-11 · 3 obs

○ 2016-10-21 05:23:46
● 2020-07-13 18:11:14
● 2026-04-11 18:00:34

●MXd117561b.ess.barracudanetworks.com2020-07-13 → 2026-04-11 · 3 obs

○ 2016-10-21 05:23:46
● 2020-07-13 18:11:14
● 2026-04-11 18:00:34

○MXmx1-us1.ppe-hosted.com2015-08-15 → 2016-10-21 · 4 obs

● 2015-08-15 17:20:16
● 2016-10-21 05:23:46
○ 2020-07-13 18:11:14
○ 2026-04-11 18:00:34

○MXmx2-us1.ppe-hosted.com2015-08-15 → 2016-10-21 · 4 obs

● 2015-08-15 17:20:16
● 2016-10-21 05:23:46
○ 2020-07-13 18:11:14
○ 2026-04-11 18:00:34

○A100.49.21.862026-02-22 → 2026-03-01 · 5 obs

○ 2026-02-22 09:13:30
● 2026-02-22 17:30:22
● 2026-03-01 19:52:30
○ 2026-03-02 09:53:12
○ 2026-04-11 18:00:34

○A100.49.38.2002026-03-18 → 2026-03-25 · 5 obs

○ 2026-03-18 07:06:50
● 2026-03-18 10:15:40
● 2026-03-25 14:01:02
○ 2026-04-01 04:23:20
○ 2026-04-11 18:00:34

○A100.50.233.552026-03-03 → 2026-03-06 · 5 obs

○ 2026-03-03 16:43:12
● 2026-03-03 22:08:40
● 2026-03-06 09:25:52
○ 2026-03-06 14:24:38
○ 2026-04-11 18:00:34

○A18.233.194.72026-03-17 → 2026-03-25 · 5 obs

○ 2026-03-17 02:05:52
● 2026-03-17 06:22:38
● 2026-03-25 14:01:02
○ 2026-04-01 04:23:20
○ 2026-04-11 18:00:34

○A23.185.0.12020-07-13 → 2020-07-13 · 4 obs

○ 2016-10-21 05:23:46
● 2020-07-13 18:11:14
○ 2026-02-15 16:18:34
○ 2026-04-11 18:00:34

○A2620:12a:8000::12020-07-13 → 2020-07-13 · 4 obs

○ 2016-10-21 05:23:46
● 2020-07-13 18:11:14
○ 2026-02-15 16:18:34
○ 2026-04-11 18:00:34

○A2620:12a:8001::12020-07-13 → 2020-07-13 · 4 obs

○ 2016-10-21 05:23:46
● 2020-07-13 18:11:14
○ 2026-02-15 16:18:34
○ 2026-04-11 18:00:34

○A3.216.16.1922026-02-15 → 2026-03-03 · 5 obs

○ 2020-07-13 18:11:14
● 2026-02-15 16:18:34
● 2026-03-03 16:43:12
○ 2026-03-03 22:08:40
○ 2026-04-11 18:00:34

●A3.95.125.382026-04-11 → 2026-04-11 · 2 obs

○ 2026-04-03 06:16:36
● 2026-04-11 18:00:34

○A34.200.168.192026-03-06 → 2026-03-19 · 5 obs

○ 2026-03-06 09:25:52
● 2026-03-06 14:24:38
● 2026-03-19 21:17:12
○ 2026-03-20 10:15:36
○ 2026-04-11 18:00:34

○A34.200.7.1912026-02-15 → 2026-04-11 · 2 obs

○ 2026-02-15 16:18:34
○ 2026-04-11 18:00:34

○A34.229.2.2072026-04-01 → 2026-04-03 · 4 obs

○ 2026-03-25 14:01:02
● 2026-04-01 04:23:20
● 2026-04-03 06:16:36
○ 2026-04-11 18:00:34

●A35.153.82.1172026-04-01 → 2026-04-11 · 3 obs

○ 2026-03-25 14:01:02
● 2026-04-01 04:23:20
● 2026-04-11 18:00:34

○A35.175.70.1502026-03-05 → 2026-03-18 · 5 obs

○ 2026-03-04 05:39:58
● 2026-03-05 07:10:28
● 2026-03-18 07:06:50
○ 2026-03-18 10:15:40
○ 2026-04-11 18:00:34

○A44.209.113.2282026-04-01 → 2026-04-03 · 4 obs

○ 2026-03-25 14:01:02
● 2026-04-01 04:23:20
● 2026-04-03 06:16:36
○ 2026-04-11 18:00:34

○A44.219.131.272026-03-02 → 2026-03-17 · 5 obs

○ 2026-03-01 19:52:30
● 2026-03-02 09:53:12
● 2026-03-17 02:05:52
○ 2026-03-17 06:22:38
○ 2026-04-11 18:00:34

○A52.6.98.2402026-02-15 → 2026-02-22 · 5 obs

○ 2020-07-13 18:11:14
● 2026-02-15 16:18:34
● 2026-02-22 09:13:30
○ 2026-02-22 17:30:22
○ 2026-04-11 18:00:34

○A54.234.122.412026-02-15 → 2026-04-11 · 2 obs

○ 2026-02-15 16:18:34
○ 2026-04-11 18:00:34

○A54.235.240.182026-02-15 → 2026-04-11 · 2 obs

○ 2026-02-15 16:18:34
○ 2026-04-11 18:00:34

○A69.18.193.1652015-08-15 → 2016-10-21 · 4 obs

● 2015-08-15 17:20:16
● 2016-10-21 05:23:46
○ 2020-07-13 18:11:14
○ 2026-04-11 18:00:34

○A98.87.197.1472026-03-20 → 2026-03-25 · 5 obs

○ 2026-03-19 21:17:12
● 2026-03-20 10:15:36
● 2026-03-25 14:01:02
○ 2026-04-01 04:23:20
○ 2026-04-11 18:00:34

○A98.89.94.1202026-02-15 → 2026-03-04 · 5 obs

○ 2020-07-13 18:11:14
● 2026-02-15 16:18:34
● 2026-03-04 05:39:58
○ 2026-03-05 07:10:28
○ 2026-04-11 18:00:34

●A98.94.118.1252026-04-11 → 2026-04-11 · 2 obs

○ 2026-04-03 06:16:36
● 2026-04-11 18:00:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
stcusa.com	ns-552.awsdns-05.net, ns-288.awsdns-36.com, ns-1259.awsdns-29.org, ns-2022.awsdns-60.co.uk	1 record

✅ Authoritative Response

Server:205.251.194.40

NS records: ns-552.awsdns-05.net, ns-288.awsdns-36.com, ns-1259.awsdns-29.org, ns-2022.awsdns-60.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stcusa.com (unsigned zone)

⏱️ Timing

Total: 594ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`98.94.118.125, 35.153.82.117...`
NS	4	`ns-1259.awsdns-29.org, ns-2022.awsdns-60.co.uk...`
MX	2	`d117561a.ess.barracudanetworks.com (pri:, d117561b.ess.barracudanetworks.com (pri:`
TXT	9	`MS=ms80988196, amazonses:SoMYIRR4y9AykHk/xa8VOfcuRhnUX2...`
SOA	1	`ns-1259.awsdns-29.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-288.awsdns-36.com)

Analysis

Hierarchy

stcusa.com is a parent of www.stcusa.com, vc5.stcusa.com, api-ms.stcusa.com, studentapi.stcusa.com, mail.stcusa.com and several other host names.

IP Addresses

Three IP numbers are pointed to by stcusa.com: 3.95.125.38, 35.153.82.117 and 98.94.118.125.

Other host names, for instance mckissock.com, elitelearning.com, alliedschools.com, fhea.com and colibrigroup.com share IP numbers with stcusa.com.

Name Servers

stcusa.com is delegated to four name servers: ns-288.awsdns-36.com, ns-552.awsdns-05.net, ns-1259.awsdns-29.org and ns-2022.awsdns-60.co.uk.

stcusa.com at least partially shares name servers with other domains, for instance tenado.at, weichertrealtors.com, knowledgedirectweb.com, logicad.tw and robbiewaterhouse.com.

These name servers are commonly used with the name servers ns-507.awsdns-63.com.

Host names with two IP numbers:

ns-288.awsdns-36.com points to: 2600:9000:5301:2000::1 and 205.251.193.32.

ns-552.awsdns-05.net points to: 2600:9000:5302:2800::1 and 205.251.194.40.

ns-1259.awsdns-29.org points to: 2600:9000:5304:eb00::1 and 205.251.196.235.

ns-2022.awsdns-60.co.uk points to: 2600:9000:5307:e600::1 and 205.251.199.230.

Mail Servers

stcusa.com is handled by two mail servers: d117561a.ess.barracudanetworks.com and d117561b.ess.barracudanetworks.com.

stcusa.com uses the same mail server setup as other domains, such as stcusa.com.cdn.cloudflare.net.

stcusa.com - robtex.com

stcusa.com

com

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`stcusa.com`

`com`