tudy.cn - robtex.com
tudy.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=2034669014 | ||||||
Same first word
Similar names
DNS History
13 records (7 active, 6 former)
○A103.13.73.1592017-01-06 → 2017-01-06 · 4 obs
● 2017-01-06 07:45:54
○ 2026-04-07 16:12:02
○ 2026-04-14 08:50:22
●A103.218.240.1842026-04-07 → 2026-04-14 · 3 obs
● 2026-04-07 16:12:02
● 2026-04-14 08:50:22
●A118.193.33.2202026-04-07 → 2026-04-14 · 3 obs
● 2026-04-07 16:12:02
● 2026-04-14 08:50:22
●A118.193.37.942026-04-07 → 2026-04-14 · 3 obs
● 2026-04-07 16:12:02
● 2026-04-14 08:50:22
●A152.32.171.652026-04-07 → 2026-04-14 · 3 obs
● 2026-04-07 16:12:02
● 2026-04-14 08:50:22
●A154.85.60.1502026-04-07 → 2026-04-14 · 3 obs
● 2026-04-07 16:12:02
● 2026-04-14 08:50:22
○A183.111.157.682017-01-06 → 2017-01-06 · 4 obs
● 2017-01-06 07:45:54
○ 2026-04-07 16:12:02
○ 2026-04-14 08:50:22
○A42.200.35.1392016-06-01 → 2016-06-01 · 4 obs
● 2016-06-01 17:28:50
○ 2017-01-06 07:45:54
○ 2026-04-14 08:50:22
○A47.90.20.172016-06-01 → 2016-06-01 · 4 obs
● 2016-06-01 17:28:50
○ 2017-01-06 07:45:54
○ 2026-04-14 08:50:22
○A64.62.224.2532015-08-14 → 2015-12-19 · 4 obs
● 2015-12-19 22:19:10
○ 2016-06-01 17:28:50
○ 2026-04-14 08:50:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| tudy.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 tudy.cn (unsigned zone)
⏱️ Timing
Total: 4009ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 5 | 118.193.33.220, 154.85.60.150... |
Analysis
IP Addresses
tudy.cn points to five IPs: 103.218.240.184, 118.193.33.220, 118.193.37.94, 152.32.171.65 and 154.85.60.150.
Other host names, for instance uth.cn, 573ce.tpyjt.com, dingtech.com, dates9579.(0x736578)date1nederland.info.cn and yikaoquan.com share IP numbers with tudy.cn.
Name Servers
tudy.cn is delegated to two name servers: pk3.22.cn and pk4.22.cn.
tudy.cn uses the same name server setup as other domains, for instance mxqb.cn, ndola.com, dataiguo.com, rx1.cn and lmfh.cn.
Host names with a single IP number:
pk3.22.cn points to 39.101.68.48.
pk4.22.cn points to 39.101.68.48.
Host names pointing to 39.101.68.48: pk3.22.cn and pk4.22.cn.