dfopen.com - robtex.com
dfopen.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.judns.com ⚠️ Not in zone NS records | ||||||
| A | 47.97.51.45🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD | ||||||
| PTR | ip-47-97-51-45.defastlink.net | ||||||
| NS | ns1.julydns.com ⚠️ Not in parent delegation | ||||||
| A | 47.97.51.45🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD | ||||||
| PTR | ip-47-97-51-45.defastlink.net | ||||||
| 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 | ||||||
| PTR | ip-162-159-27-251.defastlink.net | ||||||
| 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 | ||||||
| PTR | ip-162-159-48-223.defastlink.net | ||||||
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=1771291435 | ||||||
Same first word
Similar names
DNS History
11 records (4 active, 7 former)
○NSmain1.ns365.net2015-07-15 → 2017-03-28 · 4 obs
● 2017-03-28 08:53:32
○ 2026-02-15 11:27:16
○ 2026-03-23 15:55:56
●NSns1.judns.com2026-02-15 → 2026-03-23 · 3 obs
● 2026-02-15 11:27:16
● 2026-03-23 15:55:56
●NSns1.julydns.com2026-02-15 → 2026-03-23 · 3 obs
● 2026-02-15 11:27:16
● 2026-03-23 15:55:56
●NSns2.judns.com2026-02-15 → 2026-03-23 · 3 obs
● 2026-02-15 11:27:16
● 2026-03-23 15:55:56
●NSns2.julydns.com2026-02-15 → 2026-03-23 · 3 obs
● 2026-02-15 11:27:16
● 2026-03-23 15:55:56
○NSns3.gzidc.com2015-11-23 → 2017-03-28 · 5 obs
● 2015-11-23 13:57:58
● 2017-03-28 08:53:32
○ 2026-02-15 11:27:16
○ 2026-03-23 15:55:56
○NSns3.ns365.net2015-11-23 → 2017-03-28 · 5 obs
● 2015-11-23 13:57:58
● 2017-03-28 08:53:32
○ 2026-02-15 11:27:16
○ 2026-03-23 15:55:56
○NSns4.gzidc.com2015-11-23 → 2017-03-28 · 5 obs
● 2015-11-23 13:57:58
● 2017-03-28 08:53:32
○ 2026-02-15 11:27:16
○ 2026-03-23 15:55:56
○NSns4.ns365.net2015-11-23 → 2017-03-28 · 5 obs
● 2015-11-23 13:57:58
● 2017-03-28 08:53:32
○ 2026-02-15 11:27:16
○ 2026-03-23 15:55:56
○A103.41.65.1662026-02-15 → 2026-02-22 · 5 obs
● 2026-02-15 11:27:16
● 2026-02-22 06:42:40
○ 2026-03-17 18:27:34
○ 2026-03-23 15:55:56
○A124.173.80.2172015-07-15 → 2017-03-28 · 4 obs
● 2017-03-28 08:53:32
○ 2026-02-15 11:27:16
○ 2026-03-23 15:55:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| dfopen.com | ns1.judns.com, ns2.judns.com | 2 records |
✅ Authoritative Response
Server:162.159.27.251
NS records: ns1.judns.com, ns2.judns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dfopen.com (unsigned zone)
⏱️ Timing
Total: 3224ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.judns.com, ns2.judns.com)
Analysis
Name Servers
dfopen.com's delegation is handled by four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
dfopen.com partially shares name servers with other domains; examples include shtlkj.com, bzfjb.com, rjpi.cn, hncdx.com and qnomsf.cn.
These name servers are often used with the name servers jm1.dns.com and jm2.dns.com.
Host names with one IP number:
ns1.judns.com points to: 47.97.51.45; ns2.judns.com points to: 162.159.27.251; ns1.julydns.com points to: 47.97.51.45; ns2.julydns.com points to: 162.159.48.223.
Host names that point to 47.97.51.45: ns1.judns.com and ns1.julydns.com.