mail.21bc.com - robtex.com

mail.21bc.com

DNSSEC⚠️ Not signed
A114.55.177.251🇨🇳 Alibaba-Cloud114.55.128.0/17

21bc.com

DNSSEC⚠️ Not signed
A114.55.177.251🇨🇳 Alibaba-Cloud114.55.128.0/17
NSiz23tw7do3lz ⭐
NSdns.21bc.com ⚠️ Not in zone NS records
NSdns.21qy.com
MXmail.21bc.com ⭐
SOAiz23tw7do3lzhostmaster serial=9

MX for

21bc.com

Same first word

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DNS History

2 records (1 active, 1 former)

20162017201820192020202120222023202420252026A114.55.177.251119.84.8.11
●A114.55.177.2512016-08-31 → 2026-04-13 · 3 obs
○ 2016-07-14 17:47:34
● 2016-08-31 18:45:12
● 2026-04-13 06:13:44
○A119.84.8.112015-08-16 → 2016-07-14 · 4 obs
● 2015-08-16 10:19:28
● 2016-07-14 17:47:34
○ 2016-08-31 18:45:12
○ 2026-04-13 06:13:44

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comj.gtld-servers.net, e.gtld-servers.net, l.gtld-servers.net, i.gtld-servers.net...-
21bc.comdns.21bc.com, dns.21qy.com2 records

✅ Authoritative Response

Server:114.55.177.251

NS records: dns.21bc.com, dns.21qy.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21bc.com (unsigned zone)

⏱️ Timing

Total: 4402ms | Queries: -

📄 Records

TypeCountSample Data
A1114.55.177.251

📌 Glue Records Collected

Total: 2

In-bailiwick: 1 (dns.21bc.com)

Out-of-bailiwick: 1 (dns.21qy.com)

Analysis

Mail Server Role

The mail server for 21bc.com is mail.21bc.com.

IP Addresses

mail.21bc.com points to a single IP number: 114.55.177.251.

Other host names, for instance dns.21qy.com, www.tideinfo.com.cn, mail.tideinfo.com.cn, dns.21bc.com and 21qy.com share IP numbers with mail.21bc.com.