costto.build - robtex.com

costto.build

DNSSEC⚠️ Not signed
A2606:4700:3034::6815:4d79🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:cfaa🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.77.121Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.207.170🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSdenver.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2cc4🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdenver.ns.cloudflare.com
A2803:f800:50::6ca2:c3c4🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdenver.ns.cloudflare.com
A2a06:98c1:50::ac40:23c4🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdenver.ns.cloudflare.com
A108.162.195.196🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdenver.ns.cloudflare.com
A162.159.44.196Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdenver.ns.cloudflare.com
A172.64.35.196🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdenver.ns.cloudflare.com
NSliberty.ns.cloudflare.com
A2606:4700:50::a29f:26f0🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRliberty.ns.cloudflare.com
A2803:f800:50::6ca2:c2f0🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRliberty.ns.cloudflare.com
A2a06:98c1:50::ac40:22f0🇺🇸 Cloudflare2a06:98c1:50::/45
PTRliberty.ns.cloudflare.com
A108.162.194.240🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRliberty.ns.cloudflare.com
A162.159.38.240Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRliberty.ns.cloudflare.com
A172.64.34.240🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRliberty.ns.cloudflare.com
MXmx1.feishu.cn ⭐
A52.220.106.220🇸🇬 Amazon52.220.0.0/15 SIN prefix
PTRec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com
MXmx2.feishu.cn(5)
A101.126.58.225🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,
A122.14.229.0🇨🇳 CHINAMOBILE-CN122.14.224.0/20
MXmx3.feishu.cn(10)
A52.220.106.220🇸🇬 Amazon52.220.0.0/15 SIN prefix
PTRec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com
A101.126.58.225🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,
A122.14.229.0🇨🇳 CHINAMOBILE-CN122.14.224.0/20
TXTgoogle-site-verification=E7XwXQK6gdccFG5g6y8ENE4_EwdCNVOvZ7ZbwrQQHM4
TXTv=spf1 +include:_netblocks.m.feishu.cn -all
TXTverification-code-site-App_feishu=indnZbi3YTkuucwfJHqu
TXTyandex-verification: 0d435008513c97e8
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.77.121, 172.67.207.170
IPv6 hints2606:4700:3034::6815:4d79, 2606:4700:3036::ac43:cfaa
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=193, name=cloudflare-ech.com
SOAdenver.ns.cloudflare.comdns@cloudflare.com serial=2403564345

build

DNSSEC🔒 Signed (DS record present)
NSns0.centralnic.net ⭐
NSa.nic.build
NSb.nic.build
NSc.nic.build
NSd.nic.build
SOAns0.centralnic.nethostmaster@centralnic.net serial=1778509756

Same first word

costto.build
costto.com

Similar names

cottos.com
scotto.net
scotto.org
oscott.net
oscott.com
tostoc.cn
totsoc.org.uk
sctoto.net
octtos.com
scotto.io
oscott.co.uk
scotto.ch
scotto.it
scotto.de
tocost.it
toscot.com
scotto.co.uk
cottos.fr
scotto.tv
ottsco.net
sotcot.com
stootc.com
tscoot.com
soctot.com
scoott.com
tostco.com

DNS History

9 records (9 active, 0 former)

NSdenver.ns.cloudflare.comliberty.ns.cloudflare.comMXmx1.feishu.cnmx2.feishu.cnmx3.feishu.cnA104.21.77.121172.67.207.1702606:4700:3034::6815:4d792606:4700:3036::ac43:cfaa
●NSdenver.ns.cloudflare.com2026-05-08 → 2026-05-11 · 2 obs
● 2026-05-08 13:26:44
● 2026-05-11 15:13:48
●NSliberty.ns.cloudflare.com2026-05-08 → 2026-05-11 · 2 obs
● 2026-05-08 13:26:44
● 2026-05-11 15:13:48
●MXmx1.feishu.cn2026-05-08 → 2026-05-11 · 2 obs
● 2026-05-08 13:26:44
● 2026-05-11 15:13:48
●MXmx2.feishu.cn2026-05-08 → 2026-05-11 · 2 obs
● 2026-05-08 13:26:44
● 2026-05-11 15:13:48
●MXmx3.feishu.cn2026-05-08 → 2026-05-11 · 2 obs
● 2026-05-08 13:26:44
● 2026-05-11 15:13:48
●A104.21.77.1212026-05-08 → 2026-05-11 · 2 obs
● 2026-05-08 13:26:44
● 2026-05-11 15:13:48
●A172.67.207.1702026-05-08 → 2026-05-11 · 2 obs
● 2026-05-08 13:26:44
● 2026-05-11 15:13:48
●A2606:4700:3034::6815:4d792026-05-08 → 2026-05-11 · 2 obs
● 2026-05-08 13:26:44
● 2026-05-11 15:13:48
●A2606:4700:3036::ac43:cfaa2026-05-08 → 2026-05-11 · 2 obs
● 2026-05-08 13:26:44
● 2026-05-11 15:13:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
builda.nic.build, b.nic.build, c.nic.build, d.nic.build8 records
costto.builddenver.ns.cloudflare.com, liberty.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.38.240

NS records: denver.ns.cloudflare.com, liberty.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for costto.build (unsigned zone)

⏱️ Timing

Total: 1006ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.207.170, 104.21.77.121
AAAA22606:4700:3036::ac43:cfaa, 2606:4700:3034::6815:4d79
NS2denver.ns.cloudflare.com, liberty.ns.cloudflare.com
MX3mx1.feishu.cn (pri: 1), mx3.feishu.cn (pri: 10)...
TXT4google-site-verification=E7XwXQK6gdccFG5, v=spf1 +include:_netblocks.m.feishu.cn -...
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1denver.ns.cloudflare.com dns.cloudflare.

📌 Glue Records Collected

Total: 8

In-bailiwick: 8 (a.nic.build, a.nic.build, b.nic.build...)

Analysis

IP Addresses

Four IP numbers are pointed to by costto.build: 2606:4700:3034::6815:4d79, 2606:4700:3036::ac43:cfaa, 104.21.77.121 and 172.67.207.170.

other host names including move7logicnet.vibe7wave.surf, croator.hr, yardworxllc.com, photofinder.be and quadrents.com share IP numbers with costto.build.

Name Servers

costto.build is delegated to two name servers denver.ns.cloudflare.com and liberty.ns.cloudflare.com.

costto.build shares the same name server setup as other domains, for instance shabir.id, geminairdrops.com, bracket2026.com, linkedinformatter.net and shiftschedulemaker.net.

costto.build at least partially shares name servers with other domains, for instance gabanite.cn, odds-gateway.ws, beabox.tv, windsor.co.th and qdlinkfox.com.

These name servers are commonly used with eoin.ns.cloudflare.com, chip.ns.cloudflare.com, elsa.ns.cloudflare.com, lily.ns.cloudflare.com and huxley.ns.cloudflare.com.

Host names with six IP numbers:

Host name denver.ns.cloudflare.com points to: 2606:4700:58::a29f:2cc4, 2803:f800:50::6ca2:c3c4, 2a06:98c1:50::ac40:23c4, 108.162.195.196, 162.159.44.196 and 172.64.35.196.

Host name liberty.ns.cloudflare.com points to: 2606:4700:50::a29f:26f0, 2803:f800:50::6ca2:c2f0, 2a06:98c1:50::ac40:22f0, 108.162.194.240, 162.159.38.240 and 172.64.34.240.

Mail Servers

costto.build is handled by three mail servers: mx1.feishu.cn, mx2.feishu.cn and mx3.feishu.cn.

costto.build shares some mail servers with other domains, at least partially, for instance shybj.net, adsupre.com, flywidget.digital, njfanso.com and daxue.cloud.

Host names with three IP numbers

mx3.feishu.cn points to 52.220.106.220, 101.126.58.225 and 122.14.229.0

Host names with two IP numbers

mx2.feishu.cn points to 101.126.58.225 and 122.14.229.0

Host names with one IP number

mx1.feishu.cn points to 52.220.106.220

Host names pointing to 52.220.106.220

mx3.feishu.cn and mx1.feishu.cn

Host names pointing to 101.126.58.225

mx3.feishu.cn and mx2.feishu.cn

Host names pointing to 122.14.229.0

mx3.feishu.cn and mx2.feishu.cn