coursefinder.io - robtex.com

coursefinder.io

DNSSEC⚠️ Not signed
A216.137.53.56
PTRserver-216-137-53-56.lhr82.r.cloudfront.net
A216.137.53.67
A216.137.53.109
A216.137.53.129
NSns-1620.awsdns-10.co.uk ⭐
A2600:9000:5306:5400::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront
PTRns-1620.awsdns-10.co.uk
A205.251.198.84🇺🇸 Amazon205.251.198.0/24 prefix
PTRns-1620.awsdns-10.co.uk
NSns-1319.awsdns-36.org
A2600:9000:5305:2700::1🇺🇸 Amazon2600:9000:5305::/48 - CloudFront
PTRns-1319.awsdns-36.org
A205.251.197.39🇺🇸 Amazon205.251.197.0/24 prefix
PTRns-1319.awsdns-36.org
NSns-479.awsdns-59.com
A2600:9000:5301:df00::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront
PTRns-479.awsdns-59.com
A205.251.193.223🇺🇸 Amazon205.251.193.0/24 prefix
PTRns-479.awsdns-59.com
NSns-720.awsdns-26.net
A2600:9000:5302:d000::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront
PTRns-720.awsdns-26.net
A205.251.194.208🇺🇸 Amazon205.251.194.0/24 prefix
PTRns-720.awsdns-26.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
MXaspmx2.googlemail.com(10)
A2607:f8b0:4003:c30::1b🇺🇸 Google2607:f8b0:4003::/48
PTRyutulis-in-f27.1e100.net
A74.125.27.27🇺🇸 Google74.125.27.0/24
PTRyutulis-in-f27.1e100.net
MXaspmx3.googlemail.com(10)
A2607:f8b0:4001:c70::1a🇺🇸 Google2607:f8b0:4001::/48
PTRyucbful-in-f26.1e100.net
A192.178.209.27🇺🇸 Google192.178.209.0/24
PTRyucbful-in-f27.1e100.net
TXTgoogle-site-verification=i-g9sT0X2Q1WRUTzCIyhRbNJBITVtsta(0x534558)k415NwHs
SOAns-1620.awsdns-10.co.ukawsdns-hostmaster@amazon.com serial=1

io

DNSSEC🔒 Signed (DS record present)
NSa0.nic.io ⭐ 🔒
NSa2.nic.io 🔒
NSb0.nic.io 🔒
NSc0.nic.io 🔒
SOAa0.nic.iohostmaster@donuts.email serial=1771291657

Same first word

coursefinder.net
coursefinder.co.za
coursefinder.us
coursefinder.io
coursefinder.com.au
coursefinder.co.in
coursefinder.cc
coursefinder.in
coursefinder.co.uk
coursefinder.de
coursefinder.com
coursefinder.ai

Similar names

sourcefinder.com
coursefriend.com
sourcefinder.cn
sourcefinder.org
resourcefind.com
sourcefinder.at
sourcefinder.net
sourcefinder.co
findersource.net
friendsource.com
findresource.com

DNS History

31 records (13 active, 18 former)

2017201820192020202120222023202420252026NSns-1319.awsdns-36.orgns-1620.awsdns-10.co.ukns-479.awsdns-59.comns-720.awsdns-26.netMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comA216.137.53.109216.137.53.129216.137.53.56216.137.53.67108.138.106.116108.138.106.17108.138.106.30108.138.106.39108.156.46.110108.156.46.13108.156.46.68108.156.46.8613.249.182.2213.249.182.2813.249.182.313.249.182.923.171.61.1283.171.61.153.171.61.363.171.61.9752.1.193.8652.205.233.124
●NSns-1319.awsdns-36.org2016-12-28 → 2026-02-27 · 2 obs
● 2016-12-28 20:48:04
● 2026-02-27 02:28:28
●NSns-1620.awsdns-10.co.uk2016-12-28 → 2026-02-27 · 2 obs
● 2016-12-28 20:48:04
● 2026-02-27 02:28:28
●NSns-479.awsdns-59.com2016-12-28 → 2026-02-27 · 2 obs
● 2016-12-28 20:48:04
● 2026-02-27 02:28:28
●NSns-720.awsdns-26.net2016-12-28 → 2026-02-27 · 2 obs
● 2016-12-28 20:48:04
● 2026-02-27 02:28:28
●MXalt1.aspmx.l.google.com2016-12-28 → 2026-02-27 · 2 obs
● 2016-12-28 20:48:04
● 2026-02-27 02:28:28
●MXalt2.aspmx.l.google.com2016-12-28 → 2026-02-27 · 2 obs
● 2016-12-28 20:48:04
● 2026-02-27 02:28:28
●MXaspmx.l.google.com2016-12-28 → 2026-02-27 · 2 obs
● 2016-12-28 20:48:04
● 2026-02-27 02:28:28
●MXaspmx2.googlemail.com2016-12-28 → 2026-02-27 · 2 obs
● 2016-12-28 20:48:04
● 2026-02-27 02:28:28
●MXaspmx3.googlemail.com2016-12-28 → 2026-02-27 · 2 obs
● 2016-12-28 20:48:04
● 2026-02-27 02:28:28
○A108.138.106.1162026-02-16 → 2026-02-16 · 4 obs
○ 2017-09-30 11:47:30
● 2026-02-16 02:17:28
○ 2026-02-17 00:14:30
○ 2026-02-27 02:28:28
○A108.138.106.172026-02-16 → 2026-02-16 · 4 obs
○ 2017-09-30 11:47:30
● 2026-02-16 02:17:28
○ 2026-02-17 00:14:30
○ 2026-02-27 02:28:28
○A108.138.106.302026-02-16 → 2026-02-16 · 4 obs
○ 2017-09-30 11:47:30
● 2026-02-16 02:17:28
○ 2026-02-17 00:14:30
○ 2026-02-27 02:28:28
○A108.138.106.392026-02-16 → 2026-02-16 · 4 obs
○ 2017-09-30 11:47:30
● 2026-02-16 02:17:28
○ 2026-02-17 00:14:30
○ 2026-02-27 02:28:28
○A108.156.46.1102026-02-17 → 2026-02-21 · 11 obs
○ 2026-02-16 02:17:28
● 2026-02-17 00:14:30
○ 2026-02-18 19:59:42
○ 2026-02-19 02:22:30
● 2026-02-19 04:22:42
○ 2026-02-19 06:21:58
○ 2026-02-21 02:03:26
● 2026-02-21 03:03:34
● 2026-02-21 06:03:34
○ 2026-02-21 07:04:04
○ 2026-02-27 02:28:28
○A108.156.46.132026-02-17 → 2026-02-21 · 11 obs
○ 2026-02-16 02:17:28
● 2026-02-17 00:14:30
○ 2026-02-18 19:59:42
○ 2026-02-19 02:22:30
● 2026-02-19 04:22:42
○ 2026-02-19 06:21:58
○ 2026-02-21 02:03:26
● 2026-02-21 03:03:34
● 2026-02-21 06:03:34
○ 2026-02-21 07:04:04
○ 2026-02-27 02:28:28
○A108.156.46.682026-02-17 → 2026-02-21 · 11 obs
○ 2026-02-16 02:17:28
● 2026-02-17 00:14:30
○ 2026-02-18 19:59:42
○ 2026-02-19 02:22:30
● 2026-02-19 04:22:42
○ 2026-02-19 06:21:58
○ 2026-02-21 02:03:26
● 2026-02-21 03:03:34
● 2026-02-21 06:03:34
○ 2026-02-21 07:04:04
○ 2026-02-27 02:28:28
○A108.156.46.862026-02-17 → 2026-02-21 · 11 obs
○ 2026-02-16 02:17:28
● 2026-02-17 00:14:30
○ 2026-02-18 19:59:42
○ 2026-02-19 02:22:30
● 2026-02-19 04:22:42
○ 2026-02-19 06:21:58
○ 2026-02-21 02:03:26
● 2026-02-21 03:03:34
● 2026-02-21 06:03:34
○ 2026-02-21 07:04:04
○ 2026-02-27 02:28:28
○A13.249.182.222026-02-18 → 2026-02-25 · 11 obs
○ 2026-02-17 00:14:30
● 2026-02-18 19:59:42
○ 2026-02-18 23:42:52
○ 2026-02-24 06:03:38
● 2026-02-24 07:00:44
○ 2026-02-24 08:03:38
○ 2026-02-25 06:03:20
● 2026-02-25 06:38:50
● 2026-02-25 08:02:16
○ 2026-02-25 09:02:52
○ 2026-02-27 02:28:28
○A13.249.182.282026-02-18 → 2026-02-25 · 11 obs
○ 2026-02-17 00:14:30
● 2026-02-18 19:59:42
○ 2026-02-18 23:42:52
○ 2026-02-24 06:03:38
● 2026-02-24 07:00:44
○ 2026-02-24 08:03:38
○ 2026-02-25 06:03:20
● 2026-02-25 06:38:50
● 2026-02-25 08:02:16
○ 2026-02-25 09:02:52
○ 2026-02-27 02:28:28
○A13.249.182.32026-02-18 → 2026-02-25 · 11 obs
○ 2026-02-17 00:14:30
● 2026-02-18 19:59:42
○ 2026-02-18 23:42:52
○ 2026-02-24 06:03:38
● 2026-02-24 07:00:44
○ 2026-02-24 08:03:38
○ 2026-02-25 06:03:20
● 2026-02-25 06:38:50
● 2026-02-25 08:02:16
○ 2026-02-25 09:02:52
○ 2026-02-27 02:28:28
○A13.249.182.922026-02-18 → 2026-02-25 · 11 obs
○ 2026-02-17 00:14:30
● 2026-02-18 19:59:42
○ 2026-02-18 23:42:52
○ 2026-02-24 06:03:38
● 2026-02-24 07:00:44
○ 2026-02-24 08:03:38
○ 2026-02-25 06:03:20
● 2026-02-25 06:38:50
● 2026-02-25 08:02:16
○ 2026-02-25 09:02:52
○ 2026-02-27 02:28:28
●A216.137.53.1092026-02-18 → 2026-02-27 · 34 obs
○ 2026-02-18 19:59:42
● 2026-02-18 23:42:52
● 2026-02-19 02:22:30
○ 2026-02-19 04:22:42
● 2026-02-19 06:21:58
● 2026-02-19 16:22:18
○ 2026-02-19 16:57:52
● 2026-02-19 18:55:56
● 2026-02-20 08:02:54
○ 2026-02-20 08:48:22
● 2026-02-20 10:01:30
○ 2026-02-20 10:32:52
● 2026-02-20 11:03:00
● 2026-02-21 02:03:26
○ 2026-02-21 03:03:34
○ 2026-02-21 06:03:34
● 2026-02-21 07:04:04
● 2026-02-21 10:02:54
○ 2026-02-21 10:51:54
● 2026-02-21 12:03:20
● 2026-02-21 14:33:24
○ 2026-02-21 15:34:30
● 2026-02-21 16:53:18
● 2026-02-24 06:03:38
○ 2026-02-24 07:00:44
● 2026-02-24 08:03:38
● 2026-02-25 06:03:20
○ 2026-02-25 06:38:50
○ 2026-02-25 08:02:16
● 2026-02-25 09:02:52
● 2026-02-26 21:02:58
○ 2026-02-26 21:57:30
● 2026-02-26 23:03:04
● 2026-02-27 02:28:28
●A216.137.53.1292026-02-18 → 2026-02-27 · 34 obs
○ 2026-02-18 19:59:42
● 2026-02-18 23:42:52
● 2026-02-19 02:22:30
○ 2026-02-19 04:22:42
● 2026-02-19 06:21:58
● 2026-02-19 16:22:18
○ 2026-02-19 16:57:52
● 2026-02-19 18:55:56
● 2026-02-20 08:02:54
○ 2026-02-20 08:48:22
● 2026-02-20 10:01:30
○ 2026-02-20 10:32:52
● 2026-02-20 11:03:00
● 2026-02-21 02:03:26
○ 2026-02-21 03:03:34
○ 2026-02-21 06:03:34
● 2026-02-21 07:04:04
● 2026-02-21 10:02:54
○ 2026-02-21 10:51:54
● 2026-02-21 12:03:20
● 2026-02-21 14:33:24
○ 2026-02-21 15:34:30
● 2026-02-21 16:53:18
● 2026-02-24 06:03:38
○ 2026-02-24 07:00:44
● 2026-02-24 08:03:38
● 2026-02-25 06:03:20
○ 2026-02-25 06:38:50
○ 2026-02-25 08:02:16
● 2026-02-25 09:02:52
● 2026-02-26 21:02:58
○ 2026-02-26 21:57:30
● 2026-02-26 23:03:04
● 2026-02-27 02:28:28
●A216.137.53.562026-02-18 → 2026-02-27 · 34 obs
○ 2026-02-18 19:59:42
● 2026-02-18 23:42:52
● 2026-02-19 02:22:30
○ 2026-02-19 04:22:42
● 2026-02-19 06:21:58
● 2026-02-19 16:22:18
○ 2026-02-19 16:57:52
● 2026-02-19 18:55:56
● 2026-02-20 08:02:54
○ 2026-02-20 08:48:22
● 2026-02-20 10:01:30
○ 2026-02-20 10:32:52
● 2026-02-20 11:03:00
● 2026-02-21 02:03:26
○ 2026-02-21 03:03:34
○ 2026-02-21 06:03:34
● 2026-02-21 07:04:04
● 2026-02-21 10:02:54
○ 2026-02-21 10:51:54
● 2026-02-21 12:03:20
● 2026-02-21 14:33:24
○ 2026-02-21 15:34:30
● 2026-02-21 16:53:18
● 2026-02-24 06:03:38
○ 2026-02-24 07:00:44
● 2026-02-24 08:03:38
● 2026-02-25 06:03:20
○ 2026-02-25 06:38:50
○ 2026-02-25 08:02:16
● 2026-02-25 09:02:52
● 2026-02-26 21:02:58
○ 2026-02-26 21:57:30
● 2026-02-26 23:03:04
● 2026-02-27 02:28:28
●A216.137.53.672026-02-18 → 2026-02-27 · 34 obs
○ 2026-02-18 19:59:42
● 2026-02-18 23:42:52
● 2026-02-19 02:22:30
○ 2026-02-19 04:22:42
● 2026-02-19 06:21:58
● 2026-02-19 16:22:18
○ 2026-02-19 16:57:52
● 2026-02-19 18:55:56
● 2026-02-20 08:02:54
○ 2026-02-20 08:48:22
● 2026-02-20 10:01:30
○ 2026-02-20 10:32:52
● 2026-02-20 11:03:00
● 2026-02-21 02:03:26
○ 2026-02-21 03:03:34
○ 2026-02-21 06:03:34
● 2026-02-21 07:04:04
● 2026-02-21 10:02:54
○ 2026-02-21 10:51:54
● 2026-02-21 12:03:20
● 2026-02-21 14:33:24
○ 2026-02-21 15:34:30
● 2026-02-21 16:53:18
● 2026-02-24 06:03:38
○ 2026-02-24 07:00:44
● 2026-02-24 08:03:38
● 2026-02-25 06:03:20
○ 2026-02-25 06:38:50
○ 2026-02-25 08:02:16
● 2026-02-25 09:02:52
● 2026-02-26 21:02:58
○ 2026-02-26 21:57:30
● 2026-02-26 23:03:04
● 2026-02-27 02:28:28
○A3.171.61.1282026-02-19 → 2026-02-26 · 19 obs
○ 2026-02-16 02:17:28
○ 2026-02-19 16:22:18
● 2026-02-19 16:57:52
○ 2026-02-19 18:55:56
○ 2026-02-20 08:02:54
● 2026-02-20 08:48:22
○ 2026-02-20 10:01:30
● 2026-02-20 10:32:52
○ 2026-02-20 11:03:00
○ 2026-02-21 10:02:54
● 2026-02-21 10:51:54
○ 2026-02-21 12:03:20
○ 2026-02-21 14:33:24
● 2026-02-21 15:34:30
○ 2026-02-21 16:53:18
○ 2026-02-26 21:02:58
● 2026-02-26 21:57:30
○ 2026-02-26 23:03:04
○ 2026-02-27 02:28:28
○A3.171.61.152026-02-19 → 2026-02-26 · 19 obs
○ 2026-02-16 02:17:28
○ 2026-02-19 16:22:18
● 2026-02-19 16:57:52
○ 2026-02-19 18:55:56
○ 2026-02-20 08:02:54
● 2026-02-20 08:48:22
○ 2026-02-20 10:01:30
● 2026-02-20 10:32:52
○ 2026-02-20 11:03:00
○ 2026-02-21 10:02:54
● 2026-02-21 10:51:54
○ 2026-02-21 12:03:20
○ 2026-02-21 14:33:24
● 2026-02-21 15:34:30
○ 2026-02-21 16:53:18
○ 2026-02-26 21:02:58
● 2026-02-26 21:57:30
○ 2026-02-26 23:03:04
○ 2026-02-27 02:28:28
○A3.171.61.362026-02-19 → 2026-02-26 · 19 obs
○ 2026-02-16 02:17:28
○ 2026-02-19 16:22:18
● 2026-02-19 16:57:52
○ 2026-02-19 18:55:56
○ 2026-02-20 08:02:54
● 2026-02-20 08:48:22
○ 2026-02-20 10:01:30
● 2026-02-20 10:32:52
○ 2026-02-20 11:03:00
○ 2026-02-21 10:02:54
● 2026-02-21 10:51:54
○ 2026-02-21 12:03:20
○ 2026-02-21 14:33:24
● 2026-02-21 15:34:30
○ 2026-02-21 16:53:18
○ 2026-02-26 21:02:58
● 2026-02-26 21:57:30
○ 2026-02-26 23:03:04
○ 2026-02-27 02:28:28
○A3.171.61.972026-02-19 → 2026-02-26 · 19 obs
○ 2026-02-16 02:17:28
○ 2026-02-19 16:22:18
● 2026-02-19 16:57:52
○ 2026-02-19 18:55:56
○ 2026-02-20 08:02:54
● 2026-02-20 08:48:22
○ 2026-02-20 10:01:30
● 2026-02-20 10:32:52
○ 2026-02-20 11:03:00
○ 2026-02-21 10:02:54
● 2026-02-21 10:51:54
○ 2026-02-21 12:03:20
○ 2026-02-21 14:33:24
● 2026-02-21 15:34:30
○ 2026-02-21 16:53:18
○ 2026-02-26 21:02:58
● 2026-02-26 21:57:30
○ 2026-02-26 23:03:04
○ 2026-02-27 02:28:28
○A52.1.193.862016-12-28 → 2016-12-28 · 3 obs
● 2016-12-28 20:48:04
○ 2017-09-30 11:47:30
○ 2026-02-27 02:28:28
○A52.205.233.1242016-12-28 → 2016-12-28 · 3 obs
● 2016-12-28 20:48:04
○ 2017-09-30 11:47:30
○ 2026-02-27 02:28:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ioa0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io-
coursefinder.ions-720.awsdns-26.net, ns-1620.awsdns-10.co.uk, ns-1319.awsdns-36.org, ns-479.awsdns-59.com-

✅ Authoritative Response

Server: 205.251.197.39

NS records: ns-720.awsdns-26.net, ns-1620.awsdns-10.co.uk, ns-1319.awsdns-36.org, ns-479.awsdns-59.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coursefinder.io (unsigned zone)

⏱️ Timing

Total: 481ms | Queries: -

📄 Records

TypeCountSample Data
A43.171.61.36, 3.171.61.15...
NS4ns-1319.awsdns-36.org, ns-1620.awsdns-10.co.uk...
MX5aspmx.l.google.com (pri: 1), aspmx2.googlemail.com (pri: 10)...
TXT1google-site-verification=i-g9sT0X2Q1WRUT
SOA1ns-1620.awsdns-10.co.uk awsdns-hostmaste

AI analysis

Four IP numbers are pointed to by coursefinder.io: 216.137.53.56, 216.137.53.67, 216.137.53.109 and 216.137.53.129.

other host names including lbl.com.ph, *.bundesliga.de, www.wyred.biz, uneteabelcorp.com and jtcosmetic.com share IP numbers with coursefinder.io.

coursefinder.io is delegated to four name servers: ns-479.awsdns-59.com, ns-720.awsdns-26.net, ns-1319.awsdns-36.org and ns-1620.awsdns-10.co.uk.

coursefinder.io at least partially shares name servers with other domains, for instance go3global.com, dramexchange.com, chooseincome.com.au, weddingstar.ca and bikerider.info.

these name servers are often used together with ns-943.awsdns-53.net, ns-1390.awsdns-45.org, ns-1749.awsdns-26.co.uk and ns-302.awsdns-37.com.

Host names with two IP numbers:

ns-479.awsdns-59.com points to 2600:9000:5301:df00::1 and 205.251.193.223; ns-720.awsdns-26.net points to 2600:9000:5302:d000::1 and 205.251.194.208; ns-1319.awsdns-36.org points to 2600:9000:5305:2700::1 and 205.251.197.39; ns-1620.awsdns-10.co.uk points to 2600:9000:5306:5400::1 and 205.251.198.84.

coursefinder.io is handled by five mail servers: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.

coursefinder.io shares some mail servers with other domains, at least partially, for instance ns500734.ns500699.ns500699.ns500699.ns500734.ns500734.ns500699.ns500588.ns500588.ns500683.ns500693.ns500632.ns500632.ns500588.ns500112.dtrkdll.com, ns500754.ns500754.ns500671.ns500671.ns500704.ns500671.ns500742.ns500705.ns500704.ns500688.ns500649.tenderladiesbz.com, ns500759.ns500759.ns500698.ns500758.ns500735.ns500735.ns500698.ns500735.ns500576.ns500708.ns500698.ns500619.ns500698.ns500576.ns500619.ns500576.trackreceptor.com, ns500742.ns500754.ns500742.ns500688.ns500671.ns500649.ns500678.ns500649.ns500649.ns500666.ns500142.lusty(0x736c7574)z.com and ns500698.ns500698.ns500759.ns500735.ns500735.ns500736.ns500698.ns500708.ns500619.ns500686.ns500576.ns500576.trackreceptor.com.

these mail servers are often used with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx5.googlemail.com and aspmx4.googlemail.com.

Host names with two IP numbers

aspmx2.googlemail.com points to 2607:f8b0:4003:c30::1b and 74.125.27.27

aspmx3.googlemail.com points to 2607:f8b0:4001:c70::1a and 192.178.209.27

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

Host names that point to 2607:f8b0:4003:c30::1b: aspmx2.googlemail.com and alt1.aspmx.l.google.com

Host names that point to 2607:f8b0:4001:c70::1a: aspmx3.googlemail.com and alt2.aspmx.l.google.com