coursevalu.com - robtex.com

coursevalu.com

DNSSEC⚠️ Not signed
A18.165.98.23🇺🇸 Amazon18.165.96.0/21
PTRserver-18-165-98-23.iad55.r.cloudfront.net
A18.165.98.39🇺🇸 Amazon18.165.96.0/21
A18.165.98.41🇺🇸 Amazon18.165.96.0/21
A18.165.98.97🇺🇸 Amazon18.165.96.0/21
NSns-329.awsdns-41.com ⭐
A2600:9000:5301:4900::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront
PTRns-329.awsdns-41.com
A205.251.193.73🇺🇸 Amazon205.251.193.0/24 prefix
PTRns-329.awsdns-41.com
NSns-1103.awsdns-09.org
A2600:9000:5304:4f00::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront
PTRns-1103.awsdns-09.org
A205.251.196.79🇺🇸 Amazon205.251.196.0/24 prefix
PTRns-1103.awsdns-09.org
NSns-1756.awsdns-27.co.uk
A2600:9000:5306:dc00::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront
PTRns-1756.awsdns-27.co.uk
A205.251.198.220🇺🇸 Amazon205.251.198.0/24 prefix
PTRns-1756.awsdns-27.co.uk
NSns-879.awsdns-45.net
A2600:9000:5303:6f00::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront
PTRns-879.awsdns-45.net
A205.251.195.111🇺🇸 Amazon205.251.195.0/24 prefix
PTRns-879.awsdns-45.net
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c19::1b🇺🇸 Google2607:f8b0:4004::/48
PTRbk-in-f27.1e100.net
A172.253.62.27🇺🇸 Google172.253.62.0/24
PTRbc-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2607:f8b0:4003:c30::1b🇺🇸 Google2607:f8b0:4003::/48
PTRyutulis-in-f27.1e100.net
A74.125.27.26🇺🇸 Google74.125.27.0/24
PTRyutulis-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2607:f8b0:4001:c70::1a🇺🇸 Google2607:f8b0:4001::/48
PTRyucbful-in-f26.1e100.net
A192.178.209.26🇺🇸 Google192.178.209.0/24
PTRyucbful-in-f26.1e100.net
MXalt3.aspmx.l.google.com(10)
A2607:f8b0:4024:c0d::1b🇺🇸 Google2607:f8b0::/32
PTRmj-in-f27.1e100.net
A192.178.152.26🇺🇸 Google192.178.152.0/24
PTRmj-in-f26.1e100.net
MXalt4.aspmx.l.google.com(10)
A2607:f8b0:4023:403::1a🇺🇸 Google2607:f8b0::/32
PTRgg-in-f26.1e100.net
A142.250.96.27🇺🇸 Google142.250.96.0/24
PTRgg-in-f27.1e100.net
TXTgoogle-site-verification=6adRna8n-7qb3-WcX0k1Mbe7-8tVI2OfHQ6U2YYF4dQ
TXTgoogle-site-verification=epr69zqrbtLd1WN3iLZ-AEvKae7usVerW0UQeNfp9T8
SOAns-329.awsdns-41.comawsdns-hostmaster@amazon.com serial=1

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1771291435

Similar names

valusource.com
valusource.ru

DNS History

17 records (13 active, 4 former)

202120222023202420252026NSns-1103.awsdns-09.orgns-1756.awsdns-27.co.ukns-329.awsdns-41.comns-879.awsdns-45.netns-1093.awsdns-08.orgns-2017.awsdns-60.co.ukns-368.awsdns-46.comns-601.awsdns-11.netMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comA18.165.98.2318.165.98.3918.165.98.4118.165.98.97
○NSns-1093.awsdns-08.org2020-02-25 → 2020-02-25 · 3 obs
● 2020-02-25 10:08:52
○ 2026-03-12 03:51:26
○ 2026-03-12 03:51:28
●NSns-1103.awsdns-09.org2026-03-12 → 2026-03-12 · 3 obs
○ 2020-02-25 10:08:52
● 2026-03-12 03:51:26
● 2026-03-12 03:51:28
●NSns-1756.awsdns-27.co.uk2026-03-12 → 2026-03-12 · 3 obs
○ 2020-02-25 10:08:52
● 2026-03-12 03:51:26
● 2026-03-12 03:51:28
○NSns-2017.awsdns-60.co.uk2020-02-25 → 2020-02-25 · 3 obs
● 2020-02-25 10:08:52
○ 2026-03-12 03:51:26
○ 2026-03-12 03:51:28
●NSns-329.awsdns-41.com2026-03-12 → 2026-03-12 · 3 obs
○ 2020-02-25 10:08:52
● 2026-03-12 03:51:26
● 2026-03-12 03:51:28
○NSns-368.awsdns-46.com2020-02-25 → 2020-02-25 · 3 obs
● 2020-02-25 10:08:52
○ 2026-03-12 03:51:26
○ 2026-03-12 03:51:28
○NSns-601.awsdns-11.net2020-02-25 → 2020-02-25 · 3 obs
● 2020-02-25 10:08:52
○ 2026-03-12 03:51:26
○ 2026-03-12 03:51:28
●NSns-879.awsdns-45.net2026-03-12 → 2026-03-12 · 3 obs
○ 2020-02-25 10:08:52
● 2026-03-12 03:51:26
● 2026-03-12 03:51:28
●MXalt1.aspmx.l.google.com2026-03-12 → 2026-03-12 · 2 obs
● 2026-03-12 03:51:26
● 2026-03-12 03:51:28
●MXalt2.aspmx.l.google.com2026-03-12 → 2026-03-12 · 2 obs
● 2026-03-12 03:51:26
● 2026-03-12 03:51:28
●MXalt3.aspmx.l.google.com2026-03-12 → 2026-03-12 · 2 obs
● 2026-03-12 03:51:26
● 2026-03-12 03:51:28
●MXalt4.aspmx.l.google.com2026-03-12 → 2026-03-12 · 2 obs
● 2026-03-12 03:51:26
● 2026-03-12 03:51:28
●MXaspmx.l.google.com2026-03-12 → 2026-03-12 · 2 obs
● 2026-03-12 03:51:26
● 2026-03-12 03:51:28
●A18.165.98.232026-03-12 → 2026-03-12 · 2 obs
● 2026-03-12 03:51:26
● 2026-03-12 03:51:28
●A18.165.98.392026-03-12 → 2026-03-12 · 2 obs
● 2026-03-12 03:51:26
● 2026-03-12 03:51:28
●A18.165.98.412026-03-12 → 2026-03-12 · 2 obs
● 2026-03-12 03:51:26
● 2026-03-12 03:51:28
●A18.165.98.972026-03-12 → 2026-03-12 · 2 obs
● 2026-03-12 03:51:26
● 2026-03-12 03:51:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...-
coursevalu.comns-329.awsdns-41.com, ns-879.awsdns-45.net, ns-1756.awsdns-27.co.uk, ns-1103.awsdns-09.org1 record

✅ Authoritative Response

Server: 205.251.195.111

NS records: ns-329.awsdns-41.com, ns-879.awsdns-45.net, ns-1756.awsdns-27.co.uk, ns-1103.awsdns-09.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coursevalu.com (unsigned zone)

⏱️ Timing

Total: 481ms | Queries: -

📄 Records

TypeCountSample Data
A418.165.98.39, 18.165.98.23...
NS4ns-1103.awsdns-09.org, ns-1756.awsdns-27.co.uk...
MX5aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...
TXT2google-site-verification=6adRna8n-7qb3-W, google-site-verification=epr69zqrbtLd1WN
SOA1ns-329.awsdns-41.com awsdns-hostmaster.a

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-329.awsdns-41.com)

Analysis

IP Addresses

coursevalu.com points to four IP numbers: 18.165.98.23, 18.165.98.39, 18.165.98.41 and 18.165.98.97.

Other host names, for instance d306n442navm5i.cloudfront.net, coggle.help, promfiles.com, script.dotmetrics.rocks and hj.awsapps.com share IP numbers with coursevalu.com.

Name Servers

coursevalu.com is delegated to four name servers: ns-329.awsdns-41.com, ns-879.awsdns-45.net, ns-1103.awsdns-09.org and ns-1756.awsdns-27.co.uk.

coursevalu.com at least partially shares name servers with other domains, for instance cmf.org, inwt-statistics.eu, sylviawinters.com, afcfastcash.com and heartsnapnaot.com.

Host names with two IP numbers:

ns-329.awsdns-41.com points to: 2600:9000:5301:4900::1 and 205.251.193.73.

ns-879.awsdns-45.net points to: 2600:9000:5303:6f00::1 and 205.251.195.111.

ns-1103.awsdns-09.org points to: 2600:9000:5304:4f00::1 and 205.251.196.79.

ns-1756.awsdns-27.co.uk points to: 2600:9000:5306:dc00::1 and 205.251.198.220.

Mail Servers

coursevalu.com is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

coursevalu.com shares mail servers with other domains at least in part, for instance allcityadjusting.com, lidskialf.net, sonda.com.pe, jcihair.com and pipefile.com.

these mail servers are often used with aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IP numbers:

aspmx.l.google.com points to 2607:f8b0:4004:c19::1b and 172.253.62.27.

alt1.aspmx.l.google.com points to 2607:f8b0:4003:c30::1b and 74.125.27.26.

alt2.aspmx.l.google.com points to 2607:f8b0:4001:c70::1a and 192.178.209.26.

alt3.aspmx.l.google.com points to 2607:f8b0:4024:c0d::1b and 192.178.152.26.

alt4.aspmx.l.google.com points to 2607:f8b0:4023:403::1a and 142.250.96.27.