studentchallenges.com - dns.ninja

studentchallenges.com

DNSSEC⚠️ Not signed
A2606:4700:3035::ac43:9411🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::6815:47ba🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.71.186Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.148.17🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSdexter.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2cbe🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdexter.ns.cloudflare.com
A2803:f800:50::6ca2:c3be🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdexter.ns.cloudflare.com
A2a06:98c1:50::ac40:23be🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdexter.ns.cloudflare.com
A108.162.195.190🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdexter.ns.cloudflare.com
A162.159.44.190Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdexter.ns.cloudflare.com
A172.64.35.190🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdexter.ns.cloudflare.com
NSgrannbo.ns.cloudflare.com
A2606:4700:50::a29f:2696🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgrannbo.ns.cloudflare.com
A2803:f800:50::6ca2:c296🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRgrannbo.ns.cloudflare.com
A2a06:98c1:50::ac40:2296🇺🇸 Cloudflare2a06:98c1:50::/45
PTRgrannbo.ns.cloudflare.com
A108.162.194.150🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgrannbo.ns.cloudflare.com
A162.159.38.150Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgrannbo.ns.cloudflare.com
A172.64.34.150🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgrannbo.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.71.186, 172.67.148.17
IPv6 hints2606:4700:3035::ac43:9411, 2606:4700:3036::6815:47ba
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=142, name=cloudflare-ech.com
SOAdexter.ns.cloudflare.comdns@cloudflare.com serial=2407910845

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=1782876111

Previously MX for

studentchallenges.com

Same first word

studentchallenges.com

Similar names

studentschallenge.com

DNS History

26 records (6 active, 20 former)

20162017201820192020202120222023202420252026NSdexter.ns.cloudflare.comgrannbo.ns.cloudflare.comns1.atom.comns1.dnslink.comns1.icontent.comns1.namebrightdns.comns2.atom.comns2.dnslink.comns2.icontent.comns2.namebrightdns.comMXmail.b-io.comail1.namebrightmail.commail2.namebrightmail.comstudentchallenges.comA104.21.71.186172.67.148.172606:4700:3035::ac43:94112606:4700:3036::6815:47ba104.130.196.253209.15.13.1342600:1f18:4ae:c607:5974:bfa8:d54b:7fe52600:1f18:4ae:c608:1ae1:9fc3:6ee2:84dd44.208.83.18052.20.84.6254.84.240.235CNAMEcomingsoon.namebright.com
●NSdexter.ns.cloudflare.com2026-07-01 → 2026-07-01 · 3 obs
○ 2026-03-30 01:15:14
● 2026-07-01 03:31:36
● 2026-07-01 03:31:38
●NSgrannbo.ns.cloudflare.com2026-07-01 → 2026-07-01 · 3 obs
○ 2026-03-30 01:15:14
● 2026-07-01 03:31:36
● 2026-07-01 03:31:38
○NSns1.atom.com2026-03-10 → 2026-03-10 · 4 obs
○ 2019-03-28 19:22:20
● 2026-03-10 06:50:26
○ 2026-03-30 01:15:14
○ 2026-07-01 03:31:38
○NSns1.dnslink.com2017-03-14 → 2017-03-14 · 4 obs
○ 2016-05-04 12:02:18
● 2017-03-14 07:39:02
○ 2019-03-28 19:22:20
○ 2026-07-01 03:31:38
○NSns1.icontent.com2015-06-30 → 2016-05-04 · 4 obs
● 2015-06-30 12:03:24
● 2016-05-04 12:02:18
○ 2017-03-14 07:39:02
○ 2026-07-01 03:31:38
○NSns1.namebrightdns.com2019-03-28 → 2026-03-30 · 6 obs
○ 2017-03-14 07:39:02
● 2019-03-28 19:22:20
○ 2026-03-10 06:50:26
● 2026-03-30 01:15:14
○ 2026-07-01 03:31:36
○ 2026-07-01 03:31:38
○NSns2.atom.com2026-03-10 → 2026-03-10 · 4 obs
○ 2019-03-28 19:22:20
● 2026-03-10 06:50:26
○ 2026-03-30 01:15:14
○ 2026-07-01 03:31:38
○NSns2.dnslink.com2017-03-14 → 2017-03-14 · 4 obs
○ 2016-05-04 12:02:18
● 2017-03-14 07:39:02
○ 2019-03-28 19:22:20
○ 2026-07-01 03:31:38
○NSns2.icontent.com2015-06-30 → 2016-05-04 · 4 obs
● 2015-06-30 12:03:24
● 2016-05-04 12:02:18
○ 2017-03-14 07:39:02
○ 2026-07-01 03:31:38
○NSns2.namebrightdns.com2019-03-28 → 2026-03-30 · 6 obs
○ 2017-03-14 07:39:02
● 2019-03-28 19:22:20
○ 2026-03-10 06:50:26
● 2026-03-30 01:15:14
○ 2026-07-01 03:31:36
○ 2026-07-01 03:31:38
○MXmail.b-io.co2017-03-14 → 2017-03-14 · 4 obs
○ 2016-05-04 12:02:18
● 2017-03-14 07:39:02
○ 2019-03-28 19:22:20
○ 2026-07-01 03:31:38
○MXmail1.namebrightmail.com2019-03-28 → 2026-03-30 · 6 obs
○ 2017-03-14 07:39:02
● 2019-03-28 19:22:20
○ 2026-03-10 06:50:26
● 2026-03-30 01:15:14
○ 2026-07-01 03:31:36
○ 2026-07-01 03:31:38
○MXmail2.namebrightmail.com2019-03-28 → 2026-03-30 · 6 obs
○ 2017-03-14 07:39:02
● 2019-03-28 19:22:20
○ 2026-03-10 06:50:26
● 2026-03-30 01:15:14
○ 2026-07-01 03:31:36
○ 2026-07-01 03:31:38
○MXstudentchallenges.com2015-06-30 → 2016-05-04 · 4 obs
● 2015-06-30 12:03:24
● 2016-05-04 12:02:18
○ 2017-03-14 07:39:02
○ 2026-07-01 03:31:38
○A104.130.196.2532015-06-30 → 2016-05-04 · 4 obs
● 2015-06-30 12:03:24
● 2016-05-04 12:02:18
○ 2017-03-14 07:39:02
○ 2026-07-01 03:31:38
●A104.21.71.1862026-07-01 → 2026-07-01 · 3 obs
○ 2026-03-30 01:15:14
● 2026-07-01 03:31:36
● 2026-07-01 03:31:38
●A172.67.148.172026-07-01 → 2026-07-01 · 3 obs
○ 2026-03-30 01:15:14
● 2026-07-01 03:31:36
● 2026-07-01 03:31:38
○A209.15.13.1342017-03-14 → 2017-03-14 · 4 obs
○ 2016-05-04 12:02:18
● 2017-03-14 07:39:02
○ 2019-03-28 19:22:20
○ 2026-07-01 03:31:38
○A2600:1f18:4ae:c607:5974:bfa8:d54b:7fe52026-03-30 → 2026-03-30 · 4 obs
○ 2026-03-10 06:50:26
● 2026-03-30 01:15:14
○ 2026-07-01 03:31:36
○ 2026-07-01 03:31:38
○A2600:1f18:4ae:c608:1ae1:9fc3:6ee2:84dd2026-03-30 → 2026-03-30 · 4 obs
○ 2026-03-10 06:50:26
● 2026-03-30 01:15:14
○ 2026-07-01 03:31:36
○ 2026-07-01 03:31:38
●A2606:4700:3035::ac43:94112026-07-01 → 2026-07-01 · 3 obs
○ 2026-03-30 01:15:14
● 2026-07-01 03:31:36
● 2026-07-01 03:31:38
●A2606:4700:3036::6815:47ba2026-07-01 → 2026-07-01 · 3 obs
○ 2026-03-30 01:15:14
● 2026-07-01 03:31:36
● 2026-07-01 03:31:38
○A44.208.83.1802026-03-30 → 2026-03-30 · 4 obs
○ 2026-03-10 06:50:26
● 2026-03-30 01:15:14
○ 2026-07-01 03:31:36
○ 2026-07-01 03:31:38
○A52.20.84.622026-03-10 → 2026-03-10 · 4 obs
○ 2019-03-28 19:22:20
● 2026-03-10 06:50:26
○ 2026-03-30 01:15:14
○ 2026-07-01 03:31:38
○A54.84.240.2352026-03-30 → 2026-03-30 · 4 obs
○ 2026-03-10 06:50:26
● 2026-03-30 01:15:14
○ 2026-07-01 03:31:36
○ 2026-07-01 03:31:38
○CNAMEcomingsoon.namebright.com2019-03-28 → 2019-03-28 · 3 obs
● 2019-03-28 19:22:20
○ 2026-03-10 06:50:26
○ 2026-07-01 03:31:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comi.gtld-servers.net, g.gtld-servers.net, e.gtld-servers.net, d.gtld-servers.net...-
studentchallenges.comgrannbo.ns.cloudflare.com, dexter.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.150

NS records: grannbo.ns.cloudflare.com, dexter.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studentchallenges.com (unsigned zone)

⏱️ Timing

Total: 212ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.148.17, 104.21.71.186
AAAA22606:4700:3035::ac43:9411, 2606:4700:3036::6815:47ba
NS2dexter.ns.cloudflare.com, grannbo.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1dexter.ns.cloudflare.com dns.cloudflare.

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (grannbo.ns.cloudflare.com, grannbo.ns.cloudflare.com, grannbo.ns.cloudflare.com...)

Analysis

IP Addresses

studentchallenges.com has four IP addresses: 104.21.71.186, 172.67.148.17, 2606:4700:3035::ac43:9411 and 2606:4700:3036::6815:47ba.

Among the host names that share IP numbers with studentchallenges.com are unclaimedrefunds.org, acaodeouro.com.br, findreps.net and two others.

Name Servers

studentchallenges.com is served by two delegated name servers, dexter.ns.cloudflare.com and grannbo.ns.cloudflare.com.

studentchallenges.com has the same name server delegation as a number of other domains, such as leaseport.com, mediaview.com, e-share.com and two more.

studentchallenges.com shares at least some of its name servers with other domains, including 25177e.com, degreec.com.au, skyoh.com and two others.

These name servers are frequently seen alongside the name servers diva.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

dexter.ns.cloudflare.com carries IP addresses 108.162.195.190, 162.159.44.190 and 172.64.35.190, with 3 other addresses beyond those.

grannbo.ns.cloudflare.com carries IP addresses 108.162.194.150, 162.159.38.150 and 172.64.34.150, with 3 other addresses beyond those.