51idt.com - robtex.com

51idt.com

DNSSEC⚠️ Not signed
NSdns19.hichina.com
A2408:4009:501::27🇨🇳 Alibaba-Cloud2408:4009:501::/48
A39.96.153.40🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
PTRip-39-96-153-40.defastlink.net
A39.96.153.60🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
PTRip-39-96-153-60.defastlink.net
A47.118.199.200🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
PTRip-47-118-199-200.defastlink.net
A47.118.199.220🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
PTRip-47-118-199-220.defastlink.net
A120.76.107.40🇨🇳 Alibaba-Cloud120.76.0.0/17
PTRip-120-76-107-40.defastlink.net
A120.76.107.60🇨🇳 Alibaba-Cloud120.76.0.0/17
PTRip-120-76-107-60.defastlink.net
A139.224.142.100🇨🇳 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,
PTRip-139-224-142-100.defastlink.net
A139.224.142.110🇨🇳 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,
PTRip-139-224-142-110.defastlink.net
NSdns20.hichina.com
A2408:4009:501::28🇨🇳 Alibaba-Cloud2408:4009:501::/48
A39.96.153.38🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
PTRip-39-96-153-38.defastlink.net
A39.96.153.61🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
PTRip-39-96-153-61.defastlink.net
A47.118.199.198🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
PTRip-47-118-199-198.defastlink.net
A47.118.199.222🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
PTRip-47-118-199-222.defastlink.net
A120.76.107.38🇨🇳 Alibaba-Cloud120.76.0.0/17
PTRip-120-76-107-38.defastlink.net
A120.76.107.61🇨🇳 Alibaba-Cloud120.76.0.0/17
PTRip-120-76-107-61.defastlink.net
A139.224.142.98🇨🇳 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,
PTRip-139-224-142-98.defastlink.net
A139.224.142.108🇨🇳 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,
PTRip-139-224-142-108.defastlink.net
SOAdns19.hichina.comhostmaster@hichina.com 2026-01-12 #9

com

Same first word

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
51idt.comdns19.hichina.com, dns20.hichina.com18 records

✅ Authoritative Response

Server:120.76.107.38

NS records: dns19.hichina.com, dns20.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51idt.com (unsigned zone)

⏱️ Timing

Total: 489ms | Queries: -

📄 Records

TypeCountSample Data
NS2dns19.hichina.com, dns20.hichina.com
SOA1dns19.hichina.com hostmaster.hichina.com

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns19.hichina.com, dns19.hichina.com, dns19.hichina.com...)

Analysis

Name Servers

Delegation for 51idt.com rests with two name servers, dns19.hichina.com and dns20.hichina.com.

51idt.com shares the same name server setup as other domains, including oridum.com, gem-soft.com, zgmycp.com, xiyucode.com and aishuimian.com.

51idt.com partially shares name servers with other domains, for instance azel.cn, shoffee.com, bigsun.cn and lijinquan.com.

These name servers are commonly used with ns1.alidns.com and ns2.alidns.com.

Host names with nine IP numbers:

dns19.hichina.com points to: 2408:4009:501::27, 39.96.153.40, 39.96.153.60, 47.118.199.200, 47.118.199.220, 120.76.107.40, 120.76.107.60, 139.224.142.100 and 139.224.142.110.

dns20.hichina.com points to: 2408:4009:501::28, 39.96.153.38, 39.96.153.61, 47.118.199.198, 47.118.199.222, 120.76.107.38, 120.76.107.61, 139.224.142.98 and 139.224.142.108.