mail.51ledian.com - robtex.com

mail.51ledian.com

CNAMEexmail.qq.com
DNSSEC⚠️ Not signed
NSns-cmn1.qq.com ⚠️ Not in parent delegation
A2402:4e00:111:ff4::3🇨🇳 TENCENT-NET-AP2402:4e00::/35
A42.187.235.2🇨🇳 TENCENT-NET-AP42.187.192.0/18 chinanet/CN2 TianJin province network
A43.140.54.204🇨🇳 TENCENT-NET-AP43.140.0.0/18 Tencent Cloud Computing (Beijing) Co., Ltd 309 West Zone, 3F. 49 Zhichun Road. Haidian District.
A43.142.212.27🇨🇳 TENCENT-NET-AP43.142.192.0/18
NSns-cnc1.qq.com ⚠️ Not in parent delegation
A240e:e1:aa00:2002::3🇨🇳 SHANGHAITELECOM240e:e1:a000::/36 SHIDC
A61.135.196.2🇨🇳 CHINA169-BJ61.135.196.0/24
A140.207.180.96🇨🇳 UNICOM-SHFT-IDC140.207.180.0/24 China Unicom B811&A1218, China Unicom No.21, Jin-Rong Street
A157.255.6.102🇨🇳 UNICOM-GuangZhou-IDC157.255.6.0/24
NSns-os1.qq.com ⚠️ Not in parent delegation
A2402:4e00:111:ff4::3🇨🇳 TENCENT-NET-AP2402:4e00::/35
A43.129.131.16🇸🇬 TENCENT-NET-AP-CN43.129.128.0/20
A43.130.172.23🇸🇬 TENCENT-NET-AP-CN43.130.160.0/19 ACEVILLE PTE.LTD. 16 COLLYER QUAY 18-29 INCOME AT RAFFLES
A43.134.249.23🇸🇬 TENCENT-NET-AP-CN43.134.224.0/19 ACEVILLE PTE.LTD. 16 COLLYER QUAY 18-29 INCOME AT RAFFLES
A43.159.167.10🇺🇸 TENCENT-NET-AP-CN43.159.160.0/19 ACEVILLE PTE.LTD. 16 COLLYER QUAY 18-29 INCOME AT RAFFLES
A43.159.167.133🇺🇸 TENCENT-NET-AP-CN43.159.160.0/19 ACEVILLE PTE.LTD. 16 COLLYER QUAY 18-29 INCOME AT RAFFLES
A43.166.55.3🇸🇬 TENCENT-NET-AP-CN43.166.0.0/18 ACEVILLE PTE.LTD. 16 COLLYER QUAY 18-29 INCOME AT RAFFLES
A203.205.220.26🇭🇰 TENCENT-NET-AP-CN203.205.220.0/23 Proxy-registered route object
NSns-tel1.qq.com ⚠️ Not in parent delegation
A240e:e1:aa00:2002::3🇨🇳 SHANGHAITELECOM240e:e1:a000::/36 SHIDC
A14.116.238.220🇨🇳 CHINANET-BACKBONE14.112.0.0/12 China Telecom Network
A49.7.250.139🇨🇳 CHINA-149.7.192.0/18 China Telecom Beijing Co. Ltd.
A101.227.161.254🇨🇳 SHANGHAITELECOM101.227.161.0/24 SHIDC

51ledian.com

DNSSEC⚠️ Not signed
A114.55.59.142🇨🇳 Alibaba-Cloud114.55.0.0/17
A120.26.104.9🇨🇳 Alibaba-Cloud120.26.0.0/16
NSdns9.hichina.com ⭐
NSdns10.hichina.com
MXmxbiz1.qq.com ⭐
MXmxbiz2.qq.com(10)
TXTv=spf1 include:spf.mail.qq.com ~all
SOAdns9.hichina.comhostmaster@hichina.com 2026-01-21 #9

Same first word

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DNS History

5 records (1 active, 4 former)

20162017201820192020202120222023202420252026MXmxbiz1.qq.commxbiz2.qq.comA103.7.30.46CNAMEexmail.qq.comexmail.wechatos.net
○MXmxbiz1.qq.com2016-03-30 → 2016-09-12 · 4 obs
● 2016-03-30 21:02:52
● 2016-09-12 05:42:58
○ 2026-02-18 12:52:46
○ 2026-05-13 03:41:16
○MXmxbiz2.qq.com2016-03-30 → 2016-09-12 · 4 obs
● 2016-03-30 21:02:52
● 2016-09-12 05:42:58
○ 2026-02-18 12:52:46
○ 2026-05-13 03:41:16
○A103.7.30.462015-12-22 → 2016-09-12 · 4 obs
● 2015-12-22 09:46:24
● 2016-09-12 05:42:58
○ 2026-02-18 12:52:46
○ 2026-05-13 03:41:16
●CNAMEexmail.qq.com2015-12-22 → 2026-05-13 · 2 obs
● 2015-12-22 09:46:24
● 2026-05-13 03:41:16
○CNAMEexmail.wechatos.net2015-12-22 → 2016-09-12 · 4 obs
● 2015-12-22 09:46:24
● 2016-09-12 05:42:58
○ 2026-02-18 12:52:46
○ 2026-05-13 03:41:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comc.gtld-servers.net, b.gtld-servers.net, a.gtld-servers.net, d.gtld-servers.net...-
51ledian.comdns9.hichina.com, dns10.hichina.com18 records

✅ Authoritative Response

Server:120.76.107.42

NS records: dns9.hichina.com, dns10.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 1660ms | Queries: -

📄 Records

TypeCountSample Data
CNAME1exmail.qq.com

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns9.hichina.com, dns9.hichina.com, dns9.hichina.com...)

Analysis

Name Servers

mail.51ledian.com is delegated to four name servers: ns-cmn1.qq.com, ns-cnc1.qq.com, ns-os1.qq.com and ns-tel1.qq.com.

mail.51ledian.com at least partially shares its name servers with other domains, for instance daojucheng.qq.com, openim.qq.com, mx1biz.qq.com, qqwx.qq.com and food.qq.com.

These name servers are commonly used with ns1.qq.com, ns2.qq.com, ns3.qq.com, ns4.qq.com, ns-open1.qq.com, ns-open2.qq.com and ns-open3.qq.com.

Host names with eight IP numbers:

ns-os1.qq.com points to 2402:4e00:111:ff4::343.129.131.1643.130.172.2343.134.249.2343.159.167.1043.159.167.13343.166.55.3 and 203.205.220.26.

Host names with four IP numbers:

ns-cmn1.qq.com points to 2402:4e00:111:ff4::342.187.235.243.140.54.204 and 43.142.212.27.

ns-cnc1.qq.com points to 240e:e1:aa00:2002::361.135.196.2140.207.180.96 and 157.255.6.102.

ns-tel1.qq.com points to 240e:e1:aa00:2002::314.116.238.22049.7.250.139 and 101.227.161.254.

Names pointing to 2402:4e00:111:ff4::3: ns-os1.qq.comns-cmn1.qq.com.

Names pointing to 240e:e1:aa00:2002::3: ns-cnc1.qq.comns-tel1.qq.com.