kostool.cn - robtex.com

kostool.cn

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:179a🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3031::ac43:d3b1🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.23.154Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.211.177🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSdahlia.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a59🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdahlia.ns.cloudflare.com
A2803:f800:50::6ca2:c059🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdahlia.ns.cloudflare.com
A2a06:98c1:50::ac40:2059🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdahlia.ns.cloudflare.com
A108.162.192.89🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdahlia.ns.cloudflare.com
A172.64.32.89🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdahlia.ns.cloudflare.com
A173.245.58.89🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdahlia.ns.cloudflare.com
NSphil.ns.cloudflare.com
A2606:4700:58::adf5:3b89🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRphil.ns.cloudflare.com
A2803:f800:50::6ca2:c189🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRphil.ns.cloudflare.com
A2a06:98c1:50::ac40:2189🇺🇸 Cloudflare2a06:98c1:50::/45
PTRphil.ns.cloudflare.com
A108.162.193.137🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRphil.ns.cloudflare.com
A172.64.33.137🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRphil.ns.cloudflare.com
A173.245.59.137🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRphil.ns.cloudflare.com
MXmxdomain.qq.com ⭐
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.23.154, 172.67.211.177
IPv62606:4700:3030::6815:179a, 2606:4700:3031::ac43:d3b1
SOAdahlia.ns.cloudflare.comdns@cloudflare.com serial=2398945534

cn

DNSSEC🔒 Signed (DS record present)
NSa.dns.cn ⭐
NSb.dns.cn
NSc.dns.cn
NSd.dns.cn
NSe.dns.cn
NSns.cernet.net ⚠️ Not in parent delegation
SOAa.dns.cnroot@cnnic.cn serial=2034582762

Subdomains

api.kostool.cn

Same first word

kostool.cn

Similar names

oktools.ru
oktools.net
oktools.cz
toolsok.com
oktools.de
tokolos.org
osktool.com
toolsko.eu
oktools.com
slotoko.com
oktools.xyz
oktools.cn
skoloto.com
oktools.ee
oktools.com.cn
oktools.org

DNS History

7 records (7 active, 0 former)

NSdahlia.ns.cloudflare.comphil.ns.cloudflare.comMXmxdomain.qq.comA104.21.23.154172.67.211.1772606:4700:3030::6815:179a2606:4700:3031::ac43:d3b1
●NSdahlia.ns.cloudflare.com2026-02-22 → 2026-03-24 · 2 obs
● 2026-02-22 03:00:50
● 2026-03-24 17:26:46
●NSphil.ns.cloudflare.com2026-02-22 → 2026-03-24 · 2 obs
● 2026-02-22 03:00:50
● 2026-03-24 17:26:46
●MXmxdomain.qq.com2026-02-22 → 2026-03-24 · 2 obs
● 2026-02-22 03:00:50
● 2026-03-24 17:26:46
●A104.21.23.1542026-02-22 → 2026-03-24 · 2 obs
● 2026-02-22 03:00:50
● 2026-03-24 17:26:46
●A172.67.211.1772026-02-22 → 2026-03-24 · 2 obs
● 2026-02-22 03:00:50
● 2026-03-24 17:26:46
●A2606:4700:3030::6815:179a2026-02-22 → 2026-03-24 · 2 obs
● 2026-02-22 03:00:50
● 2026-03-24 17:26:46
●A2606:4700:3031::ac43:d3b12026-02-22 → 2026-03-24 · 2 obs
● 2026-02-22 03:00:50
● 2026-03-24 17:26:46

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cna.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...-
kostool.cnphil.ns.cloudflare.com, dahlia.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.192.89

NS records: phil.ns.cloudflare.com, dahlia.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kostool.cn (unsigned zone)

⏱️ Timing

Total: 2925ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.211.177, 104.21.23.154
AAAA22606:4700:3030::6815:179a, 2606:4700:3031::ac43:d3b1
NS2dahlia.ns.cloudflare.com, phil.ns.cloudflare.com
MX1mxdomain.qq.com (pri: 10)
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1dahlia.ns.cloudflare.com dns.cloudflare.

Analysis

Hierarchy

kostool.cn is the parent of api.kostool.cn.

IP Addresses

Four IP numbers are pointed to by kostool.cn: 2606:4700:3030::6815:179a, 2606:4700:3031::ac43:d3b1, 104.21.23.154 and 172.67.211.177.

other host names including hollyforhisd.com, www.justantiques.in, www.digitalnazajednica.org, shopwebdirectory.com and mijnplek.com share IP numbers with kostool.cn.

Name Servers

kostool.cn is delegated to two name servers dahlia.ns.cloudflare.com and phil.ns.cloudflare.com.

kostool.cn shares the same name server setup as other domains, for instance vec.ca, lasor.net, ibnrochd.com, nutrition-expert.fr and owenbrotherscatering.com.

kostool.cn at least partially shares name servers with other domains, for instance hygienefluid.com, corevents.org, republicparking.cl, quinesa.com.gt and healthyrecipesblogs.com.

These name servers are commonly used alongside sullivan.ns.cloudflare.com and jaime.ns.cloudflare.com.

Host names with six IP numbers:

Host name dahlia.ns.cloudflare.com points to: 2606:4700:50::adf5:3a59, 2803:f800:50::6ca2:c059, 2a06:98c1:50::ac40:2059, 108.162.192.89, 172.64.32.89 and 173.245.58.89.

Host name phil.ns.cloudflare.com points to: 2606:4700:58::adf5:3b89, 2803:f800:50::6ca2:c189, 2a06:98c1:50::ac40:2189, 108.162.193.137, 172.64.33.137 and 173.245.59.137.

Mail Servers

kostool.cn is handled by a single mail server, mxdomain.qq.com.

kostool.cn shares the same mail server setup as other domains, for instance howard.li, haoyeeh.com, liushichao.cn, boytree.com and yuyu3007.cn.

kostool.cn shares some mail servers with other domains, at least partially, for instance ssdax.com, yfxt.net, csgt120.com, ycvc.jx.cn and bbsxcx.com.

These mail servers are commonly used alongside mxn.mxhichina.com and mxw.mxhichina.com.