520study.com - robtex.com
520study.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 201.5.220.75 | ||||||
| NS | mark.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3b82Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| A | 2803:f800:50::6ca2:c182Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| A | 2a06:98c1:50::ac40:2182Cloudflare2a06:98c1:50::/45 | ||||||
| A | 108.162.193.130Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| A | 172.64.33.130Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| A | 173.245.59.130Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | norah.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:2646🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| A | 2803:f800:50::6ca2:c246🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| A | 2a06:98c1:50::ac40:2246🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| A | 108.162.194.70🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| A | 162.159.38.70Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| A | 172.64.34.70🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| SOA | mark.ns.cloudflare.comdns@cloudflare.com serial=2419705725 | ||||||
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=1794587226 | ||||||
Same first word
Previous names
Next names
DNS History
9 records (3 active, 6 former)
○NSdns10.hichina.com2015-10-22 → 2017-02-01 · 4 obs
● 2015-10-22 20:34:18
● 2017-02-01 07:16:58
○ 2019-03-02 02:42:46
○ 2026-11-13 16:39:02
● 2017-02-01 07:16:58
○ 2019-03-02 02:42:46
○ 2026-11-13 16:39:02
○NSdns9.hichina.com2015-10-22 → 2017-02-01 · 4 obs
● 2015-10-22 20:34:18
● 2017-02-01 07:16:58
○ 2019-03-02 02:42:46
○ 2026-11-13 16:39:02
● 2017-02-01 07:16:58
○ 2019-03-02 02:42:46
○ 2026-11-13 16:39:02
○NSjm1.dns.com2019-03-02 → 2019-03-02 · 4 obs
○ 2017-02-01 07:16:58
● 2019-03-02 02:42:46
○ 2026-10-12 15:43:48
○ 2026-11-13 16:39:02
● 2019-03-02 02:42:46
○ 2026-10-12 15:43:48
○ 2026-11-13 16:39:02
○NSjm2.dns.com2019-03-02 → 2019-03-02 · 4 obs
○ 2017-02-01 07:16:58
● 2019-03-02 02:42:46
○ 2026-10-12 15:43:48
○ 2026-11-13 16:39:02
● 2019-03-02 02:42:46
○ 2026-10-12 15:43:48
○ 2026-11-13 16:39:02
●NSmark.ns.cloudflare.com2026-10-12 → 2026-11-13 · 3 obs
○ 2019-03-02 02:42:46
● 2026-10-12 15:43:48
● 2026-11-13 16:39:02
● 2026-10-12 15:43:48
● 2026-11-13 16:39:02
●NSnorah.ns.cloudflare.com2026-10-12 → 2026-11-13 · 3 obs
○ 2019-03-02 02:42:46
● 2026-10-12 15:43:48
● 2026-11-13 16:39:02
● 2026-10-12 15:43:48
● 2026-11-13 16:39:02
○A154.80.209.1452019-03-02 → 2019-03-02 · 4 obs
○ 2015-10-22 20:34:18
● 2019-03-02 02:42:46
○ 2026-10-12 15:43:48
○ 2026-11-13 16:39:02
● 2019-03-02 02:42:46
○ 2026-10-12 15:43:48
○ 2026-11-13 16:39:02
●A201.5.220.752026-10-12 → 2026-11-13 · 3 obs
○ 2019-03-02 02:42:46
● 2026-10-12 15:43:48
● 2026-11-13 16:39:02
● 2026-10-12 15:43:48
● 2026-11-13 16:39:02
○A205.164.14.742015-05-25 → 2015-05-25 · 3 obs
● 2015-05-25 22:15:34
○ 2015-10-22 20:34:18
○ 2026-11-13 16:39:02
○ 2015-10-22 20:34:18
○ 2026-11-13 16:39:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 520study.com | mark.ns.cloudflare.com, norah.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.194.70
NS records: mark.ns.cloudflare.com, norah.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 520study.com (unsigned zone)
⏱️ Timing
Total: 1301ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 201.5.220.75 |
| NS | 2 | mark.ns.cloudflare.com, norah.ns.cloudflare.com |
| SOA | 1 | mark.ns.cloudflare.com dns.cloudflare.co |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (mark.ns.cloudflare.com, mark.ns.cloudflare.com, mark.ns.cloudflare.com...)
Analysis
IP Addresses
520study.com has exactly one IP address — 201.5.220.75.
shriners.cn, gumujiaju.com, 0830nk.com plus two other host names have IP numbers in common with 520study.com.
Name Servers
The NS records for 520study.com delegate to mark.ns.cloudflare.com and norah.ns.cloudflare.com.
Hosts with 6 IP addresses each:
mark.ns.cloudflare.com maps to 108.162.193.130, 172.64.33.130, 173.245.59.130 and 3 additional IP addresses.
norah.ns.cloudflare.com maps to 108.162.194.70, 162.159.38.70, 172.64.34.70 and 3 additional IP addresses.