challenges-alg.com - robtex.com

challenges-alg.com

DNSSEC⚠️ Not signed
A2606:4700:3035::6815:1116🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:db94🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.17.22Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.219.148🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NShassan.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2c95🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRhassan.ns.cloudflare.com
A2803:f800:50::6ca2:c395🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRhassan.ns.cloudflare.com
A2a06:98c1:50::ac40:2395🇺🇸 Cloudflare2a06:98c1:50::/45
PTRhassan.ns.cloudflare.com
A108.162.195.149🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRhassan.ns.cloudflare.com
A162.159.44.149Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRhassan.ns.cloudflare.com
A172.64.35.149🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRhassan.ns.cloudflare.com
NSkelly.ns.cloudflare.com
A2606:4700:50::a29f:265b🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkelly.ns.cloudflare.com
A2803:f800:50::6ca2:c25b🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRkelly.ns.cloudflare.com
A2a06:98c1:50::ac40:225b🇺🇸 Cloudflare2a06:98c1:50::/45
PTRkelly.ns.cloudflare.com
A108.162.194.91🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkelly.ns.cloudflare.com
A162.159.38.91Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkelly.ns.cloudflare.com
A172.64.34.91🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkelly.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.17.22, 172.67.219.148
IPv6 hints2606:4700:3035::6815:1116, 2606:4700:3035::ac43:db94
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=63, name=cloudflare-ech.com
SOAhassan.ns.cloudflare.comdns@cloudflare.com serial=2402931766

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=1778321851

Same first word

challenges-alg.com

DNS History

19 records (6 active, 13 former)

20192020202120222023202420252026NShassan.ns.cloudflare.comkelly.ns.cloudflare.comdns200.anycast.memajor.ns.cloudflare.comns200.anycast.meshaz.ns.cloudflare.comMXmx1.mail.ovh.netmx2.mail.ovh.netmx3.mail.ovh.netA104.21.17.22172.67.219.1482606:4700:3035::6815:11162606:4700:3035::ac43:db94188.114.96.0188.114.97.02001:41d0:301::262a06:98c1:3120::2a06:98c1:3121::87.98.154.146
○NSdns200.anycast.me2018-05-11 → 2018-05-11 · 3 obs
● 2018-05-11 01:20:56
○ 2026-05-02 08:06:16
○ 2026-05-09 10:20:32
●NShassan.ns.cloudflare.com2026-05-02 → 2026-05-09 · 3 obs
○ 2018-05-11 01:20:56
● 2026-05-02 08:06:16
● 2026-05-09 10:20:32
●NSkelly.ns.cloudflare.com2026-05-02 → 2026-05-09 · 3 obs
○ 2018-05-11 01:20:56
● 2026-05-02 08:06:16
● 2026-05-09 10:20:32
○NSmajor.ns.cloudflare.com2026-05-02 → 2026-05-09 · 2 obs
○ 2026-05-02 08:06:16
○ 2026-05-09 10:20:32
○NSns200.anycast.me2018-05-11 → 2018-05-11 · 3 obs
● 2018-05-11 01:20:56
○ 2026-05-02 08:06:16
○ 2026-05-09 10:20:32
○NSshaz.ns.cloudflare.com2026-05-02 → 2026-05-09 · 2 obs
○ 2026-05-02 08:06:16
○ 2026-05-09 10:20:32
○MXmx1.mail.ovh.net2018-05-11 → 2018-05-11 · 3 obs
● 2018-05-11 01:20:56
○ 2026-05-02 08:06:16
○ 2026-05-09 10:20:32
○MXmx2.mail.ovh.net2018-05-11 → 2018-05-11 · 3 obs
● 2018-05-11 01:20:56
○ 2026-05-02 08:06:16
○ 2026-05-09 10:20:32
○MXmx3.mail.ovh.net2018-05-11 → 2018-05-11 · 3 obs
● 2018-05-11 01:20:56
○ 2026-05-02 08:06:16
○ 2026-05-09 10:20:32
●A104.21.17.222026-05-02 → 2026-05-09 · 5 obs
○ 2018-05-11 01:20:56
● 2026-05-02 08:06:16
○ 2026-05-06 09:45:22
● 2026-05-09 10:20:30
● 2026-05-09 10:20:32
●A172.67.219.1482026-05-02 → 2026-05-09 · 5 obs
○ 2018-05-11 01:20:56
● 2026-05-02 08:06:16
○ 2026-05-06 09:45:22
● 2026-05-09 10:20:30
● 2026-05-09 10:20:32
○A188.114.96.02026-05-06 → 2026-05-06 · 4 obs
○ 2026-05-02 08:06:16
● 2026-05-06 09:45:22
○ 2026-05-09 10:20:30
○ 2026-05-09 10:20:32
○A188.114.97.02026-05-06 → 2026-05-06 · 4 obs
○ 2026-05-02 08:06:16
● 2026-05-06 09:45:22
○ 2026-05-09 10:20:30
○ 2026-05-09 10:20:32
○A2001:41d0:301::262018-05-11 → 2018-05-11 · 3 obs
● 2018-05-11 01:20:56
○ 2026-05-02 08:06:16
○ 2026-05-09 10:20:32
●A2606:4700:3035::6815:11162026-05-02 → 2026-05-09 · 5 obs
○ 2018-05-11 01:20:56
● 2026-05-02 08:06:16
○ 2026-05-06 09:45:22
● 2026-05-09 10:20:30
● 2026-05-09 10:20:32
●A2606:4700:3035::ac43:db942026-05-02 → 2026-05-09 · 5 obs
○ 2018-05-11 01:20:56
● 2026-05-02 08:06:16
○ 2026-05-06 09:45:22
● 2026-05-09 10:20:30
● 2026-05-09 10:20:32
○A2a06:98c1:3120::2026-05-06 → 2026-05-06 · 4 obs
○ 2026-05-02 08:06:16
● 2026-05-06 09:45:22
○ 2026-05-09 10:20:30
○ 2026-05-09 10:20:32
○A2a06:98c1:3121::2026-05-06 → 2026-05-06 · 4 obs
○ 2026-05-02 08:06:16
● 2026-05-06 09:45:22
○ 2026-05-09 10:20:30
○ 2026-05-09 10:20:32
○A87.98.154.1462018-05-11 → 2018-05-11 · 3 obs
● 2018-05-11 01:20:56
○ 2026-05-02 08:06:16
○ 2026-05-09 10:20:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, a.gtld-servers.net, e.gtld-servers.net, b.gtld-servers.net...-
challenges-alg.comkelly.ns.cloudflare.com, hassan.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.195.149

NS records: kelly.ns.cloudflare.com, hassan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for challenges-alg.com (unsigned zone)

⏱️ Timing

Total: 312ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.17.22, 172.67.219.148
AAAA22606:4700:3035::ac43:db94, 2606:4700:3035::6815:1116
NS2hassan.ns.cloudflare.com, kelly.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1hassan.ns.cloudflare.com dns.cloudflare.

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

challenges-alg.com points to four IP numbers: 2606:4700:3035::6815:1116, 2606:4700:3035::ac43:db94, 104.21.17.22 and 172.67.219.148.

Other host names, for instance transformworkuk.org, ns1.oznet.com, mail.alfateceg.com, 00140123de.bountystory.click and www.win017.vip share IP numbers with challenges-alg.com.

Name Servers

challenges-alg.com's delegation is to two name servers hassan.ns.cloudflare.com and kelly.ns.cloudflare.com.

challenges-alg.com shares the same name server configuration as other domains, such as cookingpitara.com, skechersoriginales.com, tushardhara.com, monstercloud.fr and cp12352.com.

challenges-alg.com at least partially shares its name servers with other domains, for instance davisconstruction.shop, itadmin.ca, crypto-bank.info, shingmeihk.com and 6xcjbh.lol.

these name servers are commonly used together with ignacio.ns.cloudflare.com, elsa.ns.cloudflare.com, lady.ns.cloudflare.com and jasper.ns.cloudflare.com.

Host names with six IP numbers:

hassan.ns.cloudflare.com points to: 2606:4700:58::a29f:2c95, 2803:f800:50::6ca2:c395, 2a06:98c1:50::ac40:2395, 108.162.195.149, 162.159.44.149 and 172.64.35.149.

kelly.ns.cloudflare.com points to: 2606:4700:50::a29f:265b, 2803:f800:50::6ca2:c25b, 2a06:98c1:50::ac40:225b, 108.162.194.91, 162.159.38.91 and 172.64.34.91.