youdaoedu.com - robtex.com

youdaoedu.com

CNAMEexpired.hichina.com
DNSSEC⚠️ Not signed
A8.218.208.240🇭🇰 Alibaba-Cloud8.218.128.0/17 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811
A47.76.127.217🇺🇸 Alibaba-Cloud47.76.0.0/17 Proxy-registered route object
A47.91.170.222🇭🇰 Alibaba-Cloud47.91.128.0/18 Alibaba Cloud
NSns1.alidns.com ⭐ ⚠️ Not in parent delegation
A2408:4009:501::1🇨🇳 Alibaba-Cloud2408:4009:501::/48
A39.96.153.45🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
A39.96.153.55🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
A47.118.199.205🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
A47.118.199.215🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
A120.76.107.45🇨🇳 Alibaba-Cloud120.76.0.0/17
A120.76.107.55🇨🇳 Alibaba-Cloud120.76.0.0/17
A139.224.142.115🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,
A139.224.142.125🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,
NSns2.alidns.com ⚠️ Not in parent delegation
A2408:4009:501::2🇨🇳 Alibaba-Cloud2408:4009:501::/48
A39.96.153.46🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
A39.96.153.56🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
A47.118.199.206🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
A47.118.199.216🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
A120.76.107.46🇨🇳 Alibaba-Cloud120.76.0.0/17
A120.76.107.56🇨🇳 Alibaba-Cloud120.76.0.0/17
A139.224.142.116🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,
A139.224.142.126🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,
SOAns1.alidns.comhostmaster@hichina.com 2026-01-12 #9

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=1776106422

Same first word

youdaoedu.com

DNS History

16 records (5 active, 11 former)

20162017201820192020202120222023202420252026NSdns31.hichina.comdns32.hichina.comexpirens3.hichina.comexpirens4.hichina.comns1.22.cnns1.51dns.comns2.51dns.comns65.domaincontrol.comns66.domaincontrol.comMXmailstore1.secureserver.netsmtp.secureserver.netA107.163.125.5184.168.221.45192.155.160.24843.242.45.242CNAMEexpired.hichina.com
●NSdns31.hichina.com2026-04-13 → 2026-04-13 · 2 obs
○ 2017-04-03 16:14:16
● 2026-04-13 19:22:42
●NSdns32.hichina.com2026-04-13 → 2026-04-13 · 2 obs
○ 2017-04-03 16:14:16
● 2026-04-13 19:22:42
●NSexpirens3.hichina.com2026-04-13 → 2026-04-13 · 2 obs
○ 2017-04-03 16:14:16
● 2026-04-13 19:22:42
●NSexpirens4.hichina.com2026-04-13 → 2026-04-13 · 2 obs
○ 2017-04-03 16:14:16
● 2026-04-13 19:22:42
○NSns1.22.cn2016-09-09 → 2017-04-03 · 4 obs
○ 2016-01-16 15:00:20
● 2016-09-09 15:24:22
● 2017-04-03 16:14:16
○ 2026-04-13 19:22:42
○NSns1.51dns.com2015-06-14 → 2015-11-01 · 4 obs
● 2015-06-14 04:51:32
● 2015-11-01 04:35:50
○ 2016-01-16 15:00:20
○ 2026-04-13 19:22:42
○NSns2.51dns.com2015-11-01 → 2015-11-01 · 4 obs
○ 2015-06-14 04:51:32
● 2015-11-01 04:35:50
○ 2016-01-16 15:00:20
○ 2026-04-13 19:22:42
○NSns65.domaincontrol.com2016-01-16 → 2016-01-16 · 4 obs
○ 2015-11-01 04:35:50
● 2016-01-16 15:00:20
○ 2016-09-09 15:24:22
○ 2026-04-13 19:22:42
○NSns66.domaincontrol.com2016-01-16 → 2016-01-16 · 4 obs
○ 2015-11-01 04:35:50
● 2016-01-16 15:00:20
○ 2017-04-03 16:14:16
○ 2026-04-13 19:22:42
○MXmailstore1.secureserver.net2016-01-16 → 2016-01-16 · 3 obs
● 2016-01-16 15:00:20
○ 2017-04-03 16:14:16
○ 2026-04-13 19:22:42
○MXsmtp.secureserver.net2016-01-16 → 2016-01-16 · 3 obs
● 2016-01-16 15:00:20
○ 2017-04-03 16:14:16
○ 2026-04-13 19:22:42
○A107.163.125.52015-11-01 → 2015-11-01 · 4 obs
○ 2015-06-14 04:51:32
● 2015-11-01 04:35:50
○ 2016-01-16 15:00:20
○ 2026-04-13 19:22:42
○A184.168.221.452016-01-16 → 2016-01-16 · 4 obs
○ 2015-11-01 04:35:50
● 2016-01-16 15:00:20
○ 2016-09-09 15:24:22
○ 2026-04-13 19:22:42
○A192.155.160.2482015-06-14 → 2015-06-14 · 2 obs
● 2015-06-14 04:51:32
○ 2026-04-13 19:22:42
○A43.242.45.2422016-09-09 → 2017-04-03 · 4 obs
○ 2016-01-16 15:00:20
● 2016-09-09 15:24:22
● 2017-04-03 16:14:16
○ 2026-04-13 19:22:42
●CNAMEexpired.hichina.com2026-04-13 → 2026-04-13 · 1 obs
● 2026-04-13 19:22:42

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, i.gtld-servers.net, k.gtld-servers.net, d.gtld-servers.net...-
youdaoedu.comexpirens3.hichina.com, expirens4.hichina.com18 records

✅ Authoritative Response

Server:47.118.199.192

NS records: expirens3.hichina.com, expirens4.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for youdaoedu.com (unsigned zone)

⏱️ Timing

Total: 520ms | Queries: -

📄 Records

TypeCountSample Data
NS2dns31.hichina.com, dns32.hichina.com
CNAME1expired.hichina.com
SOA1dns31.hichina.com hostmaster.hichina.com

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (expirens3.hichina.com, expirens3.hichina.com, expirens3.hichina.com...)

Analysis

IP Addresses

Three IP numbers are pointed to by youdaoedu.com: 8.218.208.240, 47.76.127.217 and 47.91.170.222.

Other host names, for instance expired.hichina.com, share IP numbers with youdaoedu.com.

Name Servers

Delegation for youdaoedu.com rests with two name servers, ns1.alidns.com and ns2.alidns.com.

youdaoedu.com shares the same name server setup as other domains, including scan1688.com, chinacow.com, d0d84aca51016.beer, 2547981a01020.beer and yucsa.com.

youdaoedu.com at least partially shares name servers with other domains, for instance 404.vip, junle.net, qingfuwu.cn, yeion.com and jcdn.cn.

these name servers are often used with dns10.hichina.com, dns9.hichina.com, ns7.alidns.com, ns8.alidns.com, dns23.hichina.com, dns24.hichina.com, dns7.hichina.com and dns8.hichina.com.

Host names with nine IP numbers:

ns1.alidns.com points to: 2408:4009:501::1, 39.96.153.45, 39.96.153.55, 47.118.199.205, 47.118.199.215, 120.76.107.45, 120.76.107.55, 139.224.142.115 and 139.224.142.125.

ns2.alidns.com points to: 2408:4009:501::2, 39.96.153.46, 39.96.153.56, 47.118.199.206, 47.118.199.216, 120.76.107.46, 120.76.107.56, 139.224.142.116 and 139.224.142.126.