challengebasedlearning.org - dns.ninja

challengebasedlearning.org

DNSSEC⚠️ Not signed
A69.163.175.124🇺🇸 AS2634769.163.128.0/17 New Dream Network, LLC 417 Associated Rd. PMB 257 Brea, CA 92821 UNITED STATES
PTRdp-c5ac82d714.dreamhostps.com
NSns1.dreamhost.com ⭐
A162.159.26.14Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns1.dreamhost.com
NSns2.dreamhost.com
A162.159.26.81Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns2.dreamhost.com
NSns3.dreamhost.com
A162.159.27.84Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns3.dreamhost.com
MXmx1.mailchannels.net ⭐
A54.69.1.140🇺🇸 Amazon54.68.0.0/15 EC2 PDX Prefix
PTRec2-54-69-1-140.us-west-2.compute.amazonaws.com
MXmx2.mailchannels.net ⭐
A54.187.177.89🇺🇸 Amazon54.186.0.0/15 EC2 PDX prefix
PTRec2-54-187-177-89.us-west-2.compute.amazonaws.com
TXTv=spf1 mx include:netblocks.dreamhost.com include:relay.mailchannels.net -all
TXTgoogle-site-verification=OsJoUlwCXVLZTRYGdeH7RzDxqpCC3EZSrfuL-jP9lYs
SOAns1.dreamhost.comhostmaster@dreamhost.com 2026-06-27 #3

org

DNSSEC🔒 Signed (DS record present)
NSa0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation
NSa2.org.afilias-nst.info ⚠️ Not in parent delegation
NSb0.org.afilias-nst.org
NSb2.org.afilias-nst.org
NSc0.org.afilias-nst.info ⚠️ Not in parent delegation
NSd0.org.afilias-nst.org
SOAa0.org.afilias-nst.infohostmaster@donuts.email serial=1784965615
rank #955432 globally
rank #74761 in the tld
WOT: UNKNOWN (98/100)

Same first word

challengebasedlearning.org

DNS History

23 records (6 active, 17 former)

20162017201820192020202120222023202420252026NSns1.dreamhost.comns2.dreamhost.comns3.dreamhost.comgridmaster-ib.apple.comns57.domaincontrol.comns58.domaincontrol.comnserver.apple.comnserver.asia.apple.comnserver.euro.apple.comnserver2.apple.comnserver3.apple.comnserver4.apple.comMXmx1.mailchannels.netmx2.mailchannels.netmailstore1.secureserver.netsmtp.secureserver.netvade-in1.mail.dreamhost.comvade-in2.mail.dreamhost.comA69.163.175.12417.254.20.10184.168.221.31199.38.81.5669.163.242.70
○NSgridmaster-ib.apple.com2015-08-19 → 2016-06-22 · 4 obs
● 2015-08-19 06:31:46
● 2016-06-22 10:09:34
○ 2017-02-13 07:47:48
○ 2026-07-25 08:04:42
●NSns1.dreamhost.com2020-02-04 → 2026-07-25 · 3 obs
○ 2017-02-13 07:47:48
● 2020-02-04 18:08:42
● 2026-07-25 08:04:42
●NSns2.dreamhost.com2020-02-04 → 2026-07-25 · 3 obs
○ 2017-02-13 07:47:48
● 2020-02-04 18:08:42
● 2026-07-25 08:04:42
●NSns3.dreamhost.com2020-02-04 → 2026-07-25 · 3 obs
○ 2017-02-13 07:47:48
● 2020-02-04 18:08:42
● 2026-07-25 08:04:42
○NSns57.domaincontrol.com2017-02-13 → 2017-02-13 · 4 obs
○ 2016-06-22 10:09:34
● 2017-02-13 07:47:48
○ 2020-02-04 18:08:42
○ 2026-07-25 08:04:42
○NSns58.domaincontrol.com2017-02-13 → 2017-02-13 · 4 obs
○ 2016-06-22 10:09:34
● 2017-02-13 07:47:48
○ 2020-02-04 18:08:42
○ 2026-07-25 08:04:42
○NSnserver.apple.com2015-08-19 → 2016-06-22 · 4 obs
● 2015-08-19 06:31:46
● 2016-06-22 10:09:34
○ 2017-02-13 07:47:48
○ 2026-07-25 08:04:42
○NSnserver.asia.apple.com2015-08-19 → 2016-06-22 · 4 obs
● 2015-08-19 06:31:46
● 2016-06-22 10:09:34
○ 2017-02-13 07:47:48
○ 2026-07-25 08:04:42
○NSnserver.euro.apple.com2015-08-19 → 2016-06-22 · 4 obs
● 2015-08-19 06:31:46
● 2016-06-22 10:09:34
○ 2017-02-13 07:47:48
○ 2026-07-25 08:04:42
○NSnserver2.apple.com2015-08-19 → 2016-06-22 · 4 obs
● 2015-08-19 06:31:46
● 2016-06-22 10:09:34
○ 2017-02-13 07:47:48
○ 2026-07-25 08:04:42
○NSnserver3.apple.com2015-08-19 → 2016-06-22 · 4 obs
● 2015-08-19 06:31:46
● 2016-06-22 10:09:34
○ 2017-02-13 07:47:48
○ 2026-07-25 08:04:42
○NSnserver4.apple.com2015-08-19 → 2016-06-22 · 4 obs
● 2015-08-19 06:31:46
● 2016-06-22 10:09:34
○ 2017-02-13 07:47:48
○ 2026-07-25 08:04:42
○MXmailstore1.secureserver.net2017-02-13 → 2017-02-13 · 3 obs
● 2017-02-13 07:47:48
○ 2020-02-04 18:08:42
○ 2026-07-25 08:04:42
●MXmx1.mailchannels.net2026-03-12 → 2026-07-25 · 3 obs
○ 2020-02-04 18:08:42
● 2026-03-12 03:56:46
● 2026-07-25 08:04:42
●MXmx2.mailchannels.net2026-03-12 → 2026-07-25 · 3 obs
○ 2020-02-04 18:08:42
● 2026-03-12 03:56:46
● 2026-07-25 08:04:42
○MXsmtp.secureserver.net2017-02-13 → 2017-02-13 · 3 obs
● 2017-02-13 07:47:48
○ 2020-02-04 18:08:42
○ 2026-07-25 08:04:42
○MXvade-in1.mail.dreamhost.com2020-02-04 → 2020-02-04 · 4 obs
○ 2017-02-13 07:47:48
● 2020-02-04 18:08:42
○ 2026-03-12 03:56:46
○ 2026-07-25 08:04:42
○MXvade-in2.mail.dreamhost.com2020-02-04 → 2020-02-04 · 4 obs
○ 2017-02-13 07:47:48
● 2020-02-04 18:08:42
○ 2026-03-12 03:56:46
○ 2026-07-25 08:04:42
○A17.254.20.102015-08-19 → 2015-12-01 · 4 obs
● 2015-08-19 06:31:46
● 2015-12-01 23:29:06
○ 2016-03-06 20:54:54
○ 2026-07-25 08:04:42
○A184.168.221.312017-02-13 → 2017-02-13 · 4 obs
○ 2016-06-22 10:09:34
● 2017-02-13 07:47:48
○ 2020-02-04 18:08:42
○ 2026-07-25 08:04:42
○A199.38.81.562016-03-06 → 2016-06-22 · 5 obs
○ 2015-12-01 23:29:06
● 2016-03-06 20:54:54
● 2016-06-22 10:09:34
○ 2017-02-13 07:47:48
○ 2026-07-25 08:04:42
●A69.163.175.1242026-03-12 → 2026-07-25 · 3 obs
○ 2020-02-04 18:08:42
● 2026-03-12 03:56:46
● 2026-07-25 08:04:42
○A69.163.242.702020-02-04 → 2020-02-04 · 4 obs
○ 2017-02-13 07:47:48
● 2020-02-04 18:08:42
○ 2026-03-12 03:56:46
○ 2026-07-25 08:04:42

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgd0.org.afilias-nst.org, b0.org.afilias-nst.org, b2.org.afilias-nst.org-
challengebasedlearning.orgns3.dreamhost.com, ns2.dreamhost.com, ns1.dreamhost.com-

✅ Authoritative Response

Server:162.159.26.81

NS records: ns3.dreamhost.com, ns2.dreamhost.com, ns1.dreamhost.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for challengebasedlearning.org (unsigned zone)

⏱️ Timing

Total: 364ms | Queries: -

📄 Records

TypeCountSample Data
A169.163.175.124
NS3ns1.dreamhost.com, ns2.dreamhost.com...
MX2mx2.mailchannels.net (pri: 0), mx1.mailchannels.net (pri: 0)
TXT2google-site-verification=OsJoUlwCXVLZTRY, v=spf1 mx include:netblocks.dreamhost.co
SOA1ns1.dreamhost.com hostmaster.dreamhost.c

Analysis

IP Addresses

challengebasedlearning.org resolves to one IP address: 69.163.175.124.

Other host names share IP numbers with challengebasedlearning.org; dp-c5ac82d714.dreamhostps.com is one such example.

Name Servers

Three name servers are authoritative for challengebasedlearning.org: ns1.dreamhost.com, ns2.dreamhost.com and ns3.dreamhost.com.

challengebasedlearning.org partially shares its NS delegation with several other domains, including vinmir.com, centralpcg.com, linuxhammer.com and two others.

Three hostnames, one IP address apiece: ns1.dreamhost.com resolves to 162.159.26.14, ns2.dreamhost.com resolves to 162.159.26.81 and ns3.dreamhost.com resolves to 162.159.27.84.

Mail Servers

Mail for challengebasedlearning.org is handled by two mail servers — mx1.mailchannels.net and mx2.mailchannels.net.

challengebasedlearning.org uses an identical mail server configuration to several other domains — among them kcstyles.com, darkdan.com, zacchaeusfinancial.org and two more.

There is at least a partial overlap in mail servers between challengebasedlearning.org and other domains like bensystems.se, catharinamarklund.se and ardenlid.com.

mx1.mailchannels.net resolves to 54.69.1.140. mx2.mailchannels.net resolves to 54.187.177.89. Both host names point to a single IP number.