ask.koolearn.com - dns.ninja

ask.koolearn.com

CNAME8e7ddcfa4bbdabb9.cdn.jiashule.com
DNSSEC⚠️ Not signed
A36.158.231.206🇨🇳 CMNET-Hunan-AP36.158.231.0/24 CMI (Customer Route)
A36.158.231.223🇨🇳 CMNET-Hunan-AP36.158.231.0/24 CMI (Customer Route)
NSns1.365cyd.net ⚠️ Not in parent delegation
A240e:965:802:1040::420🇨🇳 CHINATELECOM-FUJIAN-FUZHOU-IDC1240e:965:800::/37 IDC FUJIAN PROVINCE
A112.84.222.99🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network
A112.84.222.100🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network
A116.211.128.200🇨🇳 CHINATELECOM-Hubei-IDC116.211.128.0/22 chinanet/163 hubei province network
NSns1.jiasule.net ⚠️ Not in parent delegation
A2409:8c04:1101:3050::450🇨🇳 CMNET-V4HEBEI-AS-AP2409:8c04:1101::/48 CMI (Customer Route)
A240e:965:802:1040::420🇨🇳 CHINATELECOM-FUJIAN-FUZHOU-IDC1240e:965:800::/37 IDC FUJIAN PROVINCE
A112.84.222.99🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network
A112.84.222.100🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network
A116.211.128.199🇨🇳 CHINATELECOM-Hubei-IDC116.211.128.0/22 chinanet/163 hubei province network
A116.211.128.200🇨🇳 CHINATELECOM-Hubei-IDC116.211.128.0/22 chinanet/163 hubei province network
NSns1.kangdns.com ⚠️ Not in parent delegation
A240e:965:802:1040::420🇨🇳 CHINATELECOM-FUJIAN-FUZHOU-IDC1240e:965:800::/37 IDC FUJIAN PROVINCE
A112.84.222.99🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network
NSns2.365cyd.net ⚠️ Not in parent delegation
A2409:8c04:1101:3050::450🇨🇳 CMNET-V4HEBEI-AS-AP2409:8c04:1101::/48 CMI (Customer Route)
A112.84.222.99🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network
A112.84.222.100🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network
A116.211.128.199🇨🇳 CHINATELECOM-Hubei-IDC116.211.128.0/22 chinanet/163 hubei province network
NSns2.jiasule.net ⚠️ Not in parent delegation
A2409:8c04:1101:3050::451🇨🇳 CMNET-V4HEBEI-AS-AP2409:8c04:1101::/48 CMI (Customer Route)
A240e:965:802:1040::420🇨🇳 CHINATELECOM-FUJIAN-FUZHOU-IDC1240e:965:800::/37 IDC FUJIAN PROVINCE
A112.84.222.99🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network
A112.84.222.100🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network
A116.211.128.199🇨🇳 CHINATELECOM-Hubei-IDC116.211.128.0/22 chinanet/163 hubei province network
A116.211.128.200🇨🇳 CHINATELECOM-Hubei-IDC116.211.128.0/22 chinanet/163 hubei province network
NSns2.kangdns.com ⚠️ Not in parent delegation
A2409:8c04:1101:3050::450🇨🇳 CMNET-V4HEBEI-AS-AP2409:8c04:1101::/48 CMI (Customer Route)
A116.211.128.200🇨🇳 CHINATELECOM-Hubei-IDC116.211.128.0/22 chinanet/163 hubei province network
SOA.mail@jiasule.net serial=1

koolearn.com

CNAMEkoolearn.com.eo.dnse0.com
DNSSEC⚠️ Not signed
A43.159.95.159🇸🇬 ACE-AS-AP43.159.95.0/24 ACE
WOT: SAFE (81/100)
rank #21371 globally
rank #10477 in the tld
WOT: SAFE (67/100)
📈 Tranco rank: #47,383

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DNS History

2 records (1 active, 1 former)

20162017201820192020202120222023202420252026A211.154.172.78CNAME8e7ddcfa4bbdabb9.cdn.jiashule.com
○A211.154.172.782015-05-31 → 2016-09-19 · 4 obs
● 2015-05-31 17:59:38
● 2016-09-19 17:22:58
○ 2026-03-25 13:05:10
○ 2026-08-08 01:06:34
●CNAME8e7ddcfa4bbdabb9.cdn.jiashule.com2026-03-25 → 2026-08-08 · 2 obs
● 2026-03-25 13:05:10
● 2026-08-08 01:06:34

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
koolearn.comns3.dnsv5.com, ns4.dnsv5.com19 records

✅ Authoritative Response

Server:1.12.0.16

NS records: ns3.dnsv5.com, ns4.dnsv5.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for koolearn.com (unsigned zone)

⏱️ Timing

Total: 153ms | Queries: -

📄 Records

TypeCountSample Data
CNAME18e7ddcfa4bbdabb9.cdn.jiashule.com

📌 Glue Records Collected

Total: 19

Out-of-bailiwick: 19 (ns3.dnsv5.com, ns3.dnsv5.com, ns3.dnsv5.com...)

Analysis

IP Addresses

ask.koolearn.com points to the IP addresses 36.158.231.206 and 36.158.231.223

Two other host names, along with 543699800622f59e.cdn.jiashule.com, 35ed5dd24f2a4818.cdn.jiashule.com and 73c311bf3f779406.cdn.jiashule.com, also share IP numbers with ask.koolearn.com.

Name Servers

ask.koolearn.com has 6 name servers — ns1.kangdns.com, ns2.kangdns.com, ns1.365cyd.net and 3 others.

At least some of ask.koolearn.com's name servers are shared with other domains, for example 437770da63b47c35.cdn.jiashule.com, cc1e986392c3fbd6.cdn.jiashule.com, b160bbb96ccc3641.cdn.jiashule.com and two more.

These name servers are often deployed together with the name servers ns2.365cyd.net, ns1.jiasule.net, ns2.jiasule.net and ns1.cyudun.net.

DNS names with 6 IP addresses:

ns1.jiasule.net points to 112.84.222.99, 112.84.222.100, 116.211.128.199 and 3 other IP addresses.

ns2.jiasule.net points to 112.84.222.99, 112.84.222.100, 116.211.128.199 and 3 other IP addresses.

Host names that resolve to four IP numbers:

ns1.365cyd.net directs to 112.84.222.99, 112.84.222.100, 116.211.128.200 and 240e:965:802:1040::420.

ns2.365cyd.net directs to 112.84.222.99, 112.84.222.100, 116.211.128.199 and 2409:8c04:1101:3050::450.

Host names that have two IP addresses:

ns1.kangdns.com resolves to 112.84.222.99 and 240e:965:802:1040::420.

ns2.kangdns.com resolves to 116.211.128.200 and 2409:8c04:1101:3050::450.

Each of ns1.jiasule.net, ns2.365cyd.net and ns2.kangdns.com resolves to 2409:8c04:1101:3050::450.

These host names all point to 240e:965:802:1040::420: ns1.jiasule.net, ns2.jiasule.net, ns1.365cyd.net and ns1.kangdns.com.

The following host names point to 112.84.222.99: ns1.jiasule.net, ns2.jiasule.net, ns1.365cyd.net and two others.

These host names all point to 112.84.222.100: ns1.jiasule.net, ns2.jiasule.net, ns1.365cyd.net and ns2.365cyd.net.

Each of ns1.jiasule.net, ns2.jiasule.net and ns2.365cyd.net resolves to 116.211.128.199.

These host names all point to 116.211.128.200: ns1.jiasule.net, ns2.jiasule.net, ns1.365cyd.net and ns2.kangdns.com.