polytech.cn - dns.ninja
polytech.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.218.240.184🇭🇰 UCLOUD-1103.218.240.0/24 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED FLAT/RM 603 6/F LAWS COMMERCIAL PLAZA 788 CHEUNG SHA WAN ROAD, KL, | ||||||
| A | 118.193.33.220🇭🇰 UCLOUD-1118.193.33.0/24 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED FLAT/RM 603 6/F LAWS COMMERCIAL PLAZA 788 CHEUNG SHA WAN ROAD, KL, | ||||||
| A | 118.193.37.94🇭🇰 UCLOUD-1118.193.37.0/24 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED FLAT/RM 603 6/F LAWS COMMERCIAL PLAZA 788 CHEUNG SHA WAN ROAD, KL, | ||||||
| A | 152.32.171.65🇭🇰 UCLOUD-1152.32.171.0/24 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED FLAT/RM 603 6/F LAWS COMMERCIAL PLAZA 788 CHEUNG SHA WAN ROAD, KL, | ||||||
| A | 154.85.60.150🇺🇸 BAIDU-1154.85.56.0/21 AS55967 | ||||||
| NS | pk3.22.cn ⚠️ Not in zone NS records | ||||||
| A | 39.101.68.48🇨🇳 Alibaba-Cloud39.100.0.0/14 CT BeiJing IDC | ||||||
| NS | pk4.22.cn ⚠️ Not in zone NS records | ||||||
| A | 39.101.68.48🇨🇳 Alibaba-Cloud39.100.0.0/14 CT BeiJing IDC | ||||||
cn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.cn ⭐ | ||||||
| NS | b.dns.cn | ||||||
| NS | c.dns.cn | ||||||
| NS | d.dns.cn | ||||||
| NS | e.dns.cn | ||||||
| NS | ns.cernet.net ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2034914239 | ||||||
Subdomains
mail.polytech.cn |
Same first word
Similar names
techpoly.com |
ploytech.click |
techpoly.co.jp |
techploy.com |
pylotech.com |
phytocel.com |
techoply.com |
plyotech.com |
ploytech.com |
DNS History
13 records (7 active, 6 former)
○NSns.dns.net.cn2015-08-18 → 2017-04-21 · 7 obs
● 2015-12-08 16:56:00
○ 2016-01-25 07:35:06
● 2016-04-12 00:45:46
● 2017-04-21 09:15:28
○ 2026-03-04 12:05:28
○ 2026-06-13 18:47:08
○NSns20.dns.net.cn2015-08-18 → 2017-04-21 · 4 obs
● 2017-04-21 09:15:28
○ 2026-03-04 12:05:28
○ 2026-06-13 18:47:08
○NSns7.dns.net.cn2015-08-18 → 2017-04-21 · 7 obs
○ 2015-12-08 16:56:00
● 2016-01-25 07:35:06
○ 2016-04-12 00:45:46
● 2017-04-21 09:15:28
○ 2026-03-04 12:05:28
○ 2026-06-13 18:47:08
●NSpk3.22.cn2026-03-04 → 2026-06-13 · 3 obs
● 2026-03-04 12:05:28
● 2026-06-13 18:47:08
●NSpk4.22.cn2026-03-04 → 2026-06-13 · 3 obs
● 2026-03-04 12:05:28
● 2026-06-13 18:47:08
○MXmail.polytech.cn2017-04-21 → 2017-04-21 · 4 obs
● 2017-04-21 09:15:28
○ 2026-03-04 12:05:28
○ 2026-06-13 18:47:08
○MXmx.exmail.sina.com2015-08-18 → 2016-04-12 · 4 obs
● 2016-04-12 00:45:46
○ 2017-04-21 09:15:28
○ 2026-06-13 18:47:08
●A103.218.240.1842026-03-04 → 2026-06-13 · 6 obs
● 2026-03-04 12:05:28
● 2026-03-18 14:10:00
○ 2026-03-23 02:21:52
● 2026-03-23 23:35:36
● 2026-06-13 18:47:08
●A118.193.33.2202026-03-04 → 2026-06-13 · 6 obs
● 2026-03-04 12:05:28
● 2026-03-18 14:10:00
○ 2026-03-23 02:21:52
● 2026-03-23 23:35:36
● 2026-06-13 18:47:08
●A118.193.37.942026-03-04 → 2026-06-13 · 6 obs
● 2026-03-04 12:05:28
● 2026-03-18 14:10:00
○ 2026-03-23 02:21:52
● 2026-03-23 23:35:36
● 2026-06-13 18:47:08
●A152.32.171.652026-03-04 → 2026-06-13 · 6 obs
● 2026-03-04 12:05:28
● 2026-03-18 14:10:00
○ 2026-03-23 02:21:52
● 2026-03-23 23:35:36
● 2026-06-13 18:47:08
●A154.85.60.1502026-03-04 → 2026-06-13 · 6 obs
● 2026-03-04 12:05:28
● 2026-03-18 14:10:00
○ 2026-03-23 02:21:52
● 2026-03-23 23:35:36
● 2026-06-13 18:47:08
○A58.221.42.1412015-08-18 → 2017-04-21 · 4 obs
● 2017-04-21 09:15:28
○ 2026-03-04 12:05:28
○ 2026-06-13 18:47:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | c.dns.cn, a.dns.cn, b.dns.cn, e.dns.cn... | - |
| polytech.cn | pk3.22.cn, pk4.22.cn | - |
✅ Authoritative Response
Server:39.101.68.48
NS records: pk3.22.cn, pk4.22.cn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for polytech.cn (unsigned zone)
⏱️ Timing
Total: 850ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 5 | 118.193.37.94, 152.32.171.65... |
Analysis
Hierarchy
mail.polytech.cn is delegated beneath polytech.cn.
IP Addresses
polytech.cn has five IP addresses, specifically 103.218.240.184, 118.193.33.220, 118.193.37.94 and two more
Among the host names that share IP numbers with polytech.cn are legsp.cn, tunniao.com, xjqn.cn and two others.
Name Servers
polytech.cn has two authoritative name servers — pk3.22.cn and pk4.22.cn.
polytech.cn has the same name server delegation as a number of other domains, such as bewld.com, kxtq.cn, gnx.cn and two more.
The name servers for polytech.cn overlap at least partially with those of other domains — for example clouddcn.com.
pk3.22.cn and pk4.22.cn each point to one IP address — 39.101.68.48.
The host names pk3.22.cn and pk4.22.cn both resolve to 39.101.68.48 IP addresses.