ptdf.cn - robtex.com
ptdf.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 192.151.238.229🇺🇸 POWERLINE-HK192.151.238.0/24 Powerline Internal use | ||||||
| NS | ns1.julydns.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 162.159.48.223Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns1.judns.com ⚠️ Not in zone NS records | ||||||
| A | 162.159.27.251Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.judns.com ⚠️ Not in zone NS records | ||||||
| A | 162.159.27.251Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.julydns.com ⚠️ Not in parent delegation | ||||||
| A | 162.159.48.223Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| SOA | ns1.julydns.commaster@jmdns.com serial=1779255939 | ||||||
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=2035056415 | ||||||
Previously NS for
ptdf.cn |
Same first word
Similar names
DNS History
9 records (5 active, 4 former)
●NSns1.judns.com2026-07-12 → 2026-07-18 · 3 obs
● 2026-07-12 18:35:24
● 2026-07-18 13:28:06
●NSns1.julydns.com2026-07-12 → 2026-07-18 · 3 obs
● 2026-07-12 18:35:24
● 2026-07-18 13:28:06
●NSns2.judns.com2026-07-12 → 2026-07-18 · 3 obs
● 2026-07-12 18:35:24
● 2026-07-18 13:28:06
●NSns2.julydns.com2026-07-12 → 2026-07-18 · 3 obs
● 2026-07-12 18:35:24
● 2026-07-18 13:28:06
○NSptdf.cn2015-05-21 → 2015-05-21 · 3 obs
○ 2026-07-12 18:35:24
○ 2026-07-18 13:28:06
○A103.73.97.2102017-06-09 → 2017-08-18 · 5 obs
● 2017-06-09 23:34:10
● 2017-08-18 09:37:34
○ 2026-07-12 18:35:24
○ 2026-07-18 13:28:06
●A192.151.238.2292026-07-12 → 2026-07-18 · 3 obs
● 2026-07-12 18:35:24
● 2026-07-18 13:28:06
○A202.74.3.602017-06-09 → 2017-08-18 · 5 obs
● 2017-06-09 23:34:10
● 2017-08-18 09:37:34
○ 2026-07-12 18:35:24
○ 2026-07-18 13:28:06
○A67.198.211.1382015-05-21 → 2015-05-21 · 3 obs
○ 2017-06-09 23:34:10
○ 2026-07-18 13:28:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| ptdf.cn | ns1.judns.com, ns2.judns.com | - |
✅ Authoritative Response
Server:162.159.27.251
NS records: ns1.judns.com, ns2.judns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ptdf.cn (unsigned zone)
⏱️ Timing
Total: 1067ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 192.151.238.229 |
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| SOA | 1 | ns1.julydns.com master.jmdns.com |
Analysis
IP Addresses
ptdf.cn resolves to just one IP address, 192.151.238.229.
Name Servers
The NS records for ptdf.cn point to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
The name servers of ptdf.cn overlap at least partially with those of other domains — among them spj06.com, dlitedu.com, cook-well.com and two more.
These name servers commonly appear alongside the name servers ns1.onclouddns.com and ns2.onclouddns.com.
ns1.judns.com resolves to 162.159.27.251, as does ns2.judns.com. ns1.julydns.com resolves to 162.159.48.223, as does ns2.julydns.com.
The host names ns1.judns.com and ns2.judns.com both resolve to 162.159.27.251 IP addresses.
The host names ns1.julydns.com and ns2.julydns.com both resolve to 162.159.48.223 IP addresses.