nctbbook.com - robtex.com

nctbbook.com

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:c413🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:5237🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.82.55Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.196.19🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScandy.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a4f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcandy.ns.cloudflare.com
A2803:f800:50::6ca2:c04f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRcandy.ns.cloudflare.com
A2a06:98c1:50::ac40:204f🇺🇸 Cloudflare2a06:98c1:50::/45
PTRcandy.ns.cloudflare.com
A108.162.192.79🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcandy.ns.cloudflare.com
A172.64.32.79🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcandy.ns.cloudflare.com
A173.245.58.79🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcandy.ns.cloudflare.com
NSruben.ns.cloudflare.com
A2606:4700:58::a29f:2c47🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRruben.ns.cloudflare.com
A2803:f800:50::6ca2:c347🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRruben.ns.cloudflare.com
A2a06:98c1:50::ac40:2347🇺🇸 Cloudflare2a06:98c1:50::/45
PTRruben.ns.cloudflare.com
A108.162.195.71🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRruben.ns.cloudflare.com
A162.159.44.71Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRruben.ns.cloudflare.com
A172.64.35.71🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRruben.ns.cloudflare.com
MXroute2.mx.cloudflare.net ⭐
A2606:4700:f5::e🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute2.mx.cloudflare.net
A2606:4700:f5::f🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute2.mx.cloudflare.net
A2606:4700:f5::10🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute2.mx.cloudflare.net
A162.159.205.17Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute2.mx.cloudflare.net
A162.159.205.18Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute2.mx.cloudflare.net
A162.159.205.19Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute2.mx.cloudflare.net
MXroute1.mx.cloudflare.net(98)
A2606:4700:f5::b🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute1.mx.cloudflare.net
A2606:4700:f5::c🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute1.mx.cloudflare.net
A2606:4700:f5::d🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute1.mx.cloudflare.net
A162.159.205.11Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute1.mx.cloudflare.net
A162.159.205.12Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute1.mx.cloudflare.net
A162.159.205.13Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute1.mx.cloudflare.net
MXroute3.mx.cloudflare.net(98)
A2606:4700:f5::11🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute3.mx.cloudflare.net
A2606:4700:f5::12🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute3.mx.cloudflare.net
A2606:4700:f5::13🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute3.mx.cloudflare.net
A162.159.205.23Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute3.mx.cloudflare.net
A162.159.205.24Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute3.mx.cloudflare.net
A162.159.205.25Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRroute3.mx.cloudflare.net
TXTgoogle-site-verification=f7LW4TiiWxxPeNIzAiceNlSnYOToxbi3N7sXl-e5_nI
TXTv=spf1 include:_spf.mx.cloudflare.net ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.82.55, 172.67.196.19
IPv6 hints2606:4700:3032::ac43:c413, 2606:4700:3037::6815:5237
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=95, name=cloudflare-ech.com
SOAcandy.ns.cloudflare.comdns@cloudflare.com serial=2400614688

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=1776014382
📈 Tranco rank: #835,103

Same first word

nctbbook.com

DNS History

9 records (9 active, 0 former)

NScandy.ns.cloudflare.comruben.ns.cloudflare.comMXroute1.mx.cloudflare.netroute2.mx.cloudflare.netroute3.mx.cloudflare.netA104.21.82.55172.67.196.192606:4700:3032::ac43:c4132606:4700:3037::6815:5237
●NScandy.ns.cloudflare.com2026-02-15 → 2026-04-12 · 2 obs
● 2026-02-15 23:17:00
● 2026-04-12 17:43:24
●NSruben.ns.cloudflare.com2026-02-15 → 2026-04-12 · 2 obs
● 2026-02-15 23:17:00
● 2026-04-12 17:43:24
●MXroute1.mx.cloudflare.net2026-02-15 → 2026-04-12 · 2 obs
● 2026-02-15 23:17:00
● 2026-04-12 17:43:24
●MXroute2.mx.cloudflare.net2026-02-15 → 2026-04-12 · 2 obs
● 2026-02-15 23:17:00
● 2026-04-12 17:43:24
●MXroute3.mx.cloudflare.net2026-02-15 → 2026-04-12 · 2 obs
● 2026-02-15 23:17:00
● 2026-04-12 17:43:24
●A104.21.82.552026-02-15 → 2026-04-12 · 2 obs
● 2026-02-15 23:17:00
● 2026-04-12 17:43:24
●A172.67.196.192026-02-15 → 2026-04-12 · 2 obs
● 2026-02-15 23:17:00
● 2026-04-12 17:43:24
●A2606:4700:3032::ac43:c4132026-02-15 → 2026-04-12 · 2 obs
● 2026-02-15 23:17:00
● 2026-04-12 17:43:24
●A2606:4700:3037::6815:52372026-02-15 → 2026-04-12 · 2 obs
● 2026-02-15 23:17:00
● 2026-04-12 17:43:24

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comc.gtld-servers.net, a.gtld-servers.net, j.gtld-servers.net, k.gtld-servers.net...-
nctbbook.comcandy.ns.cloudflare.com, ruben.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.192.79

NS records: candy.ns.cloudflare.com, ruben.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for nctbbook.com (unsigned zone)

⏱️ Timing

Total: 149ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.82.55, 172.67.196.19
AAAA22606:4700:3032::ac43:c413, 2606:4700:3037::6815:5237
NS2candy.ns.cloudflare.com, ruben.ns.cloudflare.com
MX3route2.mx.cloudflare.net (pri: 7), route1.mx.cloudflare.net (pri: 98)...
TXT2google-site-verification=f7LW4TiiWxxPeNI, v=spf1 include:_spf.mx.cloudflare.net ~a
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1candy.ns.cloudflare.com dns.cloudflare.c

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

nctbbook.com refers to four IP numbers: 2606:4700:3032::ac43:c413, 2606:4700:3037::6815:5237, 104.21.82.55 and 172.67.196.19.

Other host names, for instance www.qiyanbio.com.cdn.cloudflare.net, www.innovation.com.ro, tesd-709856.goverran.ru, am018.914699.com and bald-woman.com share IP numbers with nctbbook.com.

Name Servers

nctbbook.com's delegation uses two name servers: candy.ns.cloudflare.com and ruben.ns.cloudflare.com.

nctbbook.com uses the same name server setup as other domains, such as kyn24.com, sschsc.com, check-point.com.au, tehnika-bu.ru and computiful.org.

nctbbook.com at least partially shares name servers with other domains, including hardwaredrum.com, vipremote.com, pfdex.ai, medicinarts.com and xfcrm.com.

These name servers are commonly used with julio.ns.cloudflare.com, henry.ns.cloudflare.com and sterling.ns.cloudflare.com.

Host names with six IP numbers:

candy.ns.cloudflare.com points to 2606:4700:50::adf5:3a4f, 2803:f800:50::6ca2:c04f, 2a06:98c1:50::ac40:204f, 108.162.192.79, 172.64.32.79 and 173.245.58.79.

ruben.ns.cloudflare.com points to 2606:4700:58::a29f:2c47, 2803:f800:50::6ca2:c347, 2a06:98c1:50::ac40:2347, 108.162.195.71, 162.159.44.71 and 172.64.35.71.

Mail Servers

Three mail servers handle nctbbook.com: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

nctbbook.com shares at least some mail servers with other domains, for example jwinsure.com, tenderhomestore.com, charlieuniform.net, alexissportsnetworkmedia.shop and pyme.io.

Host names with six IP numbers:

route1.mx.cloudflare.net points to: 2606:4700:f5::b, 2606:4700:f5::c, 2606:4700:f5::d, 162.159.205.11, 162.159.205.12 and 162.159.205.13

route2.mx.cloudflare.net points to: 2606:4700:f5::e, 2606:4700:f5::f, 2606:4700:f5::10, 162.159.205.17, 162.159.205.18 and 162.159.205.19

route3.mx.cloudflare.net points to: 2606:4700:f5::11, 2606:4700:f5::12, 2606:4700:f5::13, 162.159.205.23, 162.159.205.24 and 162.159.205.25