simplex.co - robtex.com
simplex.co
co
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns0.centralnic.net ⭐ | ||||||
| NS | a.registrydns.co | ||||||
| NS | b.registrydns.co | ||||||
| NS | c.registrydns.co | ||||||
| NS | d.registrydns.co | ||||||
| SOA | ns0.centralnic.nethostmaster@centralnic.net serial=1759653975 | ||||||
Same first word
Similar names
DNS History
12 records (7 active, 5 former)
○NSns11.domaincontrol.com2015-08-08 → 2016-07-19 · 4 obs
● 2016-07-19 04:09:02
○ 2026-02-16 22:32:16
○ 2026-05-09 15:26:32
○NSns12.domaincontrol.com2015-08-08 → 2016-07-19 · 4 obs
● 2016-07-19 04:09:02
○ 2026-02-16 22:32:16
○ 2026-05-09 15:26:32
●NSns75.domaincontrol.com2026-02-16 → 2026-05-09 · 3 obs
● 2026-02-16 22:32:16
● 2026-05-09 15:26:32
●NSns76.domaincontrol.com2026-02-16 → 2026-05-09 · 3 obs
● 2026-02-16 22:32:16
● 2026-05-09 15:26:32
○MXmailstore1.secureserver.net2015-08-08 → 2016-07-19 · 4 obs
● 2016-07-19 04:09:02
○ 2026-02-16 22:32:16
○ 2026-05-09 15:26:32
●MXmx1.feishu.cn2026-02-16 → 2026-05-09 · 3 obs
● 2026-02-16 22:32:16
● 2026-05-09 15:26:32
●MXmx2.feishu.cn2026-02-16 → 2026-05-09 · 3 obs
● 2026-02-16 22:32:16
● 2026-05-09 15:26:32
●MXmx3.feishu.cn2026-02-16 → 2026-05-09 · 3 obs
● 2026-02-16 22:32:16
● 2026-05-09 15:26:32
○MXsmtp.secureserver.net2015-08-08 → 2016-07-19 · 4 obs
● 2016-07-19 04:09:02
○ 2026-02-16 22:32:16
○ 2026-05-09 15:26:32
●A15.197.148.332026-02-16 → 2026-05-09 · 3 obs
● 2026-02-16 22:32:16
● 2026-05-09 15:26:32
●A3.33.130.1902026-02-16 → 2026-05-09 · 3 obs
● 2026-02-16 22:32:16
● 2026-05-09 15:26:32
○A50.63.202.332015-08-08 → 2016-07-19 · 4 obs
● 2016-07-19 04:09:02
○ 2026-02-16 22:32:16
○ 2026-05-09 15:26:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| co | a.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co | - |
| simplex.co | ns75.domaincontrol.com, ns76.domaincontrol.com | - |
✅ Authoritative Response
Server:97.74.107.48
NS records: ns75.domaincontrol.com, ns76.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for simplex.co (unsigned zone)
⏱️ Timing
Total: 598ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 3.33.130.190, 15.197.148.33 |
| NS | 2 | ns75.domaincontrol.com, ns76.domaincontrol.com |
| MX | 3 | mx1.feishu.cn (pri: 1), mx2.feishu.cn (pri: 5)... |
| TXT | 2 | verification-code-site-App_feishu=MWZqwd, v=spf1 +include:_netblocks.m.feishu.cn - |
| SOA | 1 | ns75.domaincontrol.com dns.jomax.net |
Analysis
IP Addresses
simplex.co resolves to two IP numbers: 3.33.130.190 and 15.197.148.33.
Other host names, for instance tumblerdecal.com, vralfa.com, lysnup.com, creditcollectionagency.net and psychopharmacologyconsultation.com share IP numbers with simplex.co.
Name Servers
Two name servers ns75.domaincontrol.com and ns76.domaincontrol.com handle delegation for simplex.co.
simplex.co uses the same name server setup as other domains, for example appliedhomecare.com, forcecustom.com, takeoverweb.com, blackwholes.mobi and millionairememory.com.
Host names with two IP numbers:
ns75.domaincontrol.com points to: 2603:5:21b4::30 and 97.74.107.48
ns76.domaincontrol.com points to: 2603:5:22b4::30 and 173.201.75.48
Mail Servers
simplex.co is handled by three mail servers: mx1.feishu.cn, mx2.feishu.cn and mx3.feishu.cn.
simplex.co shares some mail servers with other domains, at least partially, such as ruoai.cn, ascendconsultantltd.com, wewantbest.com, ui-tech.cn and unitcc.com.
Three-IP host names: mx3.feishu.cn points to 52.220.106.220, 101.126.58.225 and 122.14.229.0.
Two-IP host names: mx2.feishu.cn points to 101.126.58.225 and 122.14.229.0.
Single-IP host names: mx1.feishu.cn points to 52.220.106.220.
Hosts pointing to 52.220.106.220: mx3.feishu.cn and mx1.feishu.cn.
Hosts pointing to 101.126.58.225: mx3.feishu.cn and mx2.feishu.cn.
Hosts pointing to 122.14.229.0: mx3.feishu.cn and mx2.feishu.cn.