quantinterviewprep.org - robtex.com

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

quantinterviewprep.org

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:afce🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:5ba9🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.91.169Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.175.206🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScarlos.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2c70🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcarlos.ns.cloudflare.com
A2803:f800:50::6ca2:c370🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRcarlos.ns.cloudflare.com
A2a06:98c1:50::ac40:2370🇺🇸 Cloudflare2a06:98c1:50::/45
PTRcarlos.ns.cloudflare.com
A108.162.195.112🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcarlos.ns.cloudflare.com
A162.159.44.112Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcarlos.ns.cloudflare.com
A172.64.35.112🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcarlos.ns.cloudflare.com
NShope.ns.cloudflare.com
A2606:4700:50::adf5:3aa3🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRhope.ns.cloudflare.com
A2803:f800:50::6ca2:c0a3🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRhope.ns.cloudflare.com
A2a06:98c1:50::ac40:20a3🇺🇸 Cloudflare2a06:98c1:50::/45
PTRhope.ns.cloudflare.com
A108.162.192.163🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRhope.ns.cloudflare.com
A172.64.32.163🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRhope.ns.cloudflare.com
A173.245.58.163🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRhope.ns.cloudflare.com
TXTgoogle-site-verification=VXfoer9rkmqyV8KMXEDbAqRd7LORSugpZ453hDXuzXY
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.91.169, 172.67.175.206
IPv6 hints2606:4700:3032::ac43:afce, 2606:4700:3037::6815:5ba9
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=190, name=cloudflare-ech.com
SOAcarlos.ns.cloudflare.comdns@cloudflare.com serial=2420199769

org

DNSSEC🔒 Signed (DS record present)
NSv0n0.pir-ns.org ⭐
NSv0n1.pir-ns.org
NSv0n2.pir-ns.org
NSv0n3.pir-ns.org
NSv2n0.pir-ns.org
NSv2n1.pir-ns.org
SOAv0n0.pir-ns.orghostmaster@donuts.email serial=1794762817

Same first word

quantinterviewprep.com
quantinterviewprep.org

Previous names

quantindex.org
quantinel.org
quantinfo.org
quanting.org
quantinhnguyenvietlao.org
quantinium.org
quantinno.org
quantinnocapital.org
quantinnov.org
quantino-theory.org
quantino.org
quantinohealth.org
quantinovaindustries.org
quantinsider.org
quantinsight.org
quantinsights.org
quantint.org
quantintel.org
quantintelligence.org
quantintelresearch.org

Next names

quantinuity.org
quantinum.org
quantio.org
quantiom.org
quantiome.org
quantiora.org
quantiota.org
quantious.org
quantip.org
quantiphi.org
quantiphied.org
quantiple.org
quantiqai.org
quantique.org
quantiqum.org
quantir.org
quantira.org

DNS History

16 records (6 active, 10 former)

NScarlos.ns.cloudflare.comhope.ns.cloudflare.comamanda.ns.cloudflare.comduke.ns.cloudflare.comA104.21.91.169172.67.175.2062606:4700:3032::ac43:afce2606:4700:3037::6815:5ba9104.21.69.29172.67.203.49188.114.96.0188.114.97.02606:4700:3033::ac43:cb312606:4700:3034::6815:451d2a06:98c1:3120::2a06:98c1:3121::
○NSamanda.ns.cloudflare.com2026-09-28 → 2026-09-28 · 3 obs
● 2026-09-28 10:20:08
○ 2026-11-13 07:06:02
○ 2026-11-15 17:21:52
●NScarlos.ns.cloudflare.com2026-11-13 → 2026-11-15 · 3 obs
○ 2026-09-28 10:20:08
● 2026-11-13 07:06:02
● 2026-11-15 17:21:52
○NSduke.ns.cloudflare.com2026-09-28 → 2026-09-28 · 3 obs
● 2026-09-28 10:20:08
○ 2026-11-13 07:06:02
○ 2026-11-15 17:21:52
●NShope.ns.cloudflare.com2026-11-13 → 2026-11-15 · 3 obs
○ 2026-09-28 10:20:08
● 2026-11-13 07:06:02
● 2026-11-15 17:21:52
○A104.21.69.292026-09-28 → 2026-09-28 · 3 obs
● 2026-09-28 10:20:08
○ 2026-11-13 07:06:02
○ 2026-11-15 17:21:52
●A104.21.91.1692026-11-15 → 2026-11-15 · 3 obs
○ 2026-11-13 07:06:02
● 2026-11-15 17:21:48
● 2026-11-15 17:21:52
●A172.67.175.2062026-11-15 → 2026-11-15 · 3 obs
○ 2026-11-13 07:06:02
● 2026-11-15 17:21:48
● 2026-11-15 17:21:52
○A172.67.203.492026-09-28 → 2026-09-28 · 3 obs
● 2026-09-28 10:20:08
○ 2026-11-13 07:06:02
○ 2026-11-15 17:21:52
○A188.114.96.02026-11-13 → 2026-11-13 · 4 obs
○ 2026-09-28 10:20:08
● 2026-11-13 07:06:02
○ 2026-11-15 17:21:48
○ 2026-11-15 17:21:52
○A188.114.97.02026-11-13 → 2026-11-13 · 4 obs
○ 2026-09-28 10:20:08
● 2026-11-13 07:06:02
○ 2026-11-15 17:21:48
○ 2026-11-15 17:21:52
●A2606:4700:3032::ac43:afce2026-11-15 → 2026-11-15 · 3 obs
○ 2026-11-13 07:06:02
● 2026-11-15 17:21:48
● 2026-11-15 17:21:52
○A2606:4700:3033::ac43:cb312026-09-28 → 2026-09-28 · 3 obs
● 2026-09-28 10:20:08
○ 2026-11-13 07:06:02
○ 2026-11-15 17:21:52
○A2606:4700:3034::6815:451d2026-09-28 → 2026-09-28 · 3 obs
● 2026-09-28 10:20:08
○ 2026-11-13 07:06:02
○ 2026-11-15 17:21:52
●A2606:4700:3037::6815:5ba92026-11-15 → 2026-11-15 · 3 obs
○ 2026-11-13 07:06:02
● 2026-11-15 17:21:48
● 2026-11-15 17:21:52
○A2a06:98c1:3120::2026-11-13 → 2026-11-13 · 4 obs
○ 2026-09-28 10:20:08
● 2026-11-13 07:06:02
○ 2026-11-15 17:21:48
○ 2026-11-15 17:21:52
○A2a06:98c1:3121::2026-11-13 → 2026-11-13 · 4 obs
○ 2026-09-28 10:20:08
● 2026-11-13 07:06:02
○ 2026-11-15 17:21:48
○ 2026-11-15 17:21:52

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgv2n0.pir-ns.org, v2n1.pir-ns.org, v0n2.pir-ns.org, v0n0.pir-ns.org...-
quantinterviewprep.orghope.ns.cloudflare.com, carlos.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.44.112

NS records: hope.ns.cloudflare.com, carlos.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for quantinterviewprep.org (unsigned zone)

⏱️ Timing

Total: 1619ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.175.206, 104.21.91.169
AAAA22606:4700:3037::6815:5ba9, 2606:4700:3032::ac43:afce
NS2carlos.ns.cloudflare.com, hope.ns.cloudflare.com
TXT1google-site-verification=VXfoer9rkmqyV8K
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1carlos.ns.cloudflare.com dns.cloudflare.

Analysis

IP Addresses

quantinterviewprep.org has four IP addresses: 104.21.91.169, 172.67.175.206, 2606:4700:3032::ac43:afce and 2606:4700:3037::6815:5ba9.

Among the host names that share IP numbers with quantinterviewprep.org are frankivsk-trend.in.ua, perfazeaulas.com.br, peercharging.com and two others.

Name Servers

quantinterviewprep.org is served by two delegated name servers, carlos.ns.cloudflare.com and hope.ns.cloudflare.com.

quantinterviewprep.org has the same name server delegation as a number of other domains, such as business4media.com, ronami.app, horizentek.com and two more.

quantinterviewprep.org has at least partial name server overlap with other domains, such as gravitytight.world, nutribag-landing.pages.dev, gkty4gt.pages.dev and two others.

These name servers tend to appear together with the name servers chase.ns.cloudflare.com, jim.ns.cloudflare.com and toby.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

carlos.ns.cloudflare.com carries IP addresses 108.162.195.112, 162.159.44.112 and 172.64.35.112, with 3 other addresses beyond those.

hope.ns.cloudflare.com carries IP addresses 108.162.192.163, 172.64.32.163 and 173.245.58.163, with 3 other addresses beyond those.