21qs.com - robtex.com
21qs.com
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1776102762 | ||||||
NS for
21qs.com |
Subdomains
root.21qs.com |
Same first word
21qs.com |
Similar names
DNS History
9 records (6 active, 3 former)
●NS21qs.com2015-06-04 → 2026-04-13 · 2 obs
● 2026-04-13 18:03:36
●MXin1-smtp.messagingengine.com2026-04-10 → 2026-04-13 · 3 obs
● 2026-04-10 06:26:02
● 2026-04-13 18:03:36
●MXin2-smtp.messagingengine.com2026-04-10 → 2026-04-13 · 3 obs
● 2026-04-10 06:26:02
● 2026-04-13 18:03:36
○MXmxbiz1.qq.com2015-06-04 → 2016-09-12 · 4 obs
● 2016-09-12 05:58:48
○ 2026-04-10 06:26:02
○ 2026-04-13 18:03:36
○MXmxbiz2.qq.com2015-06-04 → 2016-09-12 · 4 obs
● 2016-09-12 05:58:48
○ 2026-04-10 06:26:02
○ 2026-04-13 18:03:36
●A210.14.142.902026-04-10 → 2026-04-13 · 3 obs
● 2026-04-10 06:26:02
● 2026-04-13 18:03:36
○A220.194.47.792015-06-04 → 2016-09-12 · 4 obs
● 2016-09-12 05:58:48
○ 2026-04-10 06:26:02
○ 2026-04-13 18:03:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | b.gtld-servers.net, i.gtld-servers.net, h.gtld-servers.net, a.gtld-servers.net... | - |
| 21qs.com | ns.diway.com, sns.diway.com | 2 records |
✅ Authoritative Response
Server:210.14.142.89
NS records: ns.diway.com, sns.diway.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21qs.com (unsigned zone)
⏱️ Timing
Total: 653ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 210.14.142.90 |
| NS | 2 | sns.diway.com, ns.diway.com |
| MX | 2 | in1-smtp.messagingengine.com (pri: 10), in2-smtp.messagingengine.com (pri: 20) |
| SOA | 1 | 21qs.com root.21qs.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns.diway.com, sns.diway.com)
Analysis
Hierarchy
The parent of root.21qs.com is 21qs.com.
Name Server Role
21qs.com acts as the name server for 21qs.com.
ns.diway.com and sns.diway.com are commonly used as name servers along with 21qs.com.
IP Addresses
21qs.com points to a single IP number: 210.14.142.90.
Other host names, for instance root.21qs.com, share IP numbers with 21qs.com.
Name Servers
21qs.com delegates to three name servers: 21qs.com, ns.diway.com and sns.diway.com.
21qs.com shares name servers with other domains at least partially, for instance diway.com and tech-lab.cn.
Hostnames with a single IP:
21qs.com points to 210.14.142.90
ns.diway.com points to 210.14.142.89
sns.diway.com points to 210.14.142.89
Hostnames resolving to 210.14.142.89: ns.diway.com and sns.diway.com
Mail Servers
21qs.com is handled by two mail servers: in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.
21qs.com shares the same mail server setup as other domains, including jeffgolden.org, deadwax.net, idiomaticsoft.com, namilon.com and anneappleman.com.
At least part of 21qs.com's mail servers are shared with other domains, for instance ddaycreative.com and 96089.com.
Host names with eight IP numbers:
The host name in1-smtp.messagingengine.com resolves to: 103.168.172.216, 103.168.172.217, 103.168.172.218, 103.168.172.219, 103.168.172.220, 103.168.172.221, 103.168.172.222 and 103.168.172.223.
Host names with four IP numbers:
The host name in2-smtp.messagingengine.com resolves to: 202.12.124.216, 202.12.124.217, 202.12.124.218 and 202.12.124.219.