51topedu.com - robtex.com
51topedu.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3035::ac43:91c1🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3036::6815:3f88🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.63.136Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.145.193🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | dorthy.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::adf5:3af9🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dorthy.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c0f9🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | dorthy.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:20f9🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | dorthy.ns.cloudflare.com | ||||||
| A | 108.162.192.249🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dorthy.ns.cloudflare.com | ||||||
| A | 172.64.32.249🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dorthy.ns.cloudflare.com | ||||||
| A | 173.245.58.249🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dorthy.ns.cloudflare.com | ||||||
| NS | rayden.ns.cloudflare.com | ||||||
| A | 2606:4700:58::a29f:2ca3🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rayden.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c3a3🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | rayden.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:23a3🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | rayden.ns.cloudflare.com | ||||||
| A | 108.162.195.163🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rayden.ns.cloudflare.com | ||||||
| A | 162.159.44.163Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rayden.ns.cloudflare.com | ||||||
| A | 172.64.35.163🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rayden.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 | 104.21.63.136, 172.67.145.193 | ||||||
| IPv6 | 2606:4700:3035::ac43:91c1, 2606:4700:3036::6815:3f88 | ||||||
| SOA | dorthy.ns.cloudflare.comdns@cloudflare.com serial=2397263474 | ||||||
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 | ||||||
Subdomains
www.51topedu.com |
Same first word
51topedu.com |
DNS History
8 records (6 active, 2 former)
○NSdns13.hichina.com2018-01-26 → 2018-01-26 · 3 obs
○ 2026-03-02 14:06:56
○ 2026-03-23 16:51:20
○NSdns14.hichina.com2018-01-26 → 2018-01-26 · 3 obs
○ 2026-03-02 14:06:56
○ 2026-03-23 16:51:20
●NSdorthy.ns.cloudflare.com2026-03-02 → 2026-03-23 · 3 obs
● 2026-03-02 14:06:56
● 2026-03-23 16:51:20
●NSrayden.ns.cloudflare.com2026-03-02 → 2026-03-23 · 3 obs
● 2026-03-02 14:06:56
● 2026-03-23 16:51:20
●A104.21.63.1362026-03-02 → 2026-03-23 · 2 obs
● 2026-03-23 16:51:20
●A172.67.145.1932026-03-02 → 2026-03-23 · 2 obs
● 2026-03-23 16:51:20
●A2606:4700:3035::ac43:91c12026-03-02 → 2026-03-23 · 2 obs
● 2026-03-23 16:51:20
●A2606:4700:3036::6815:3f882026-03-02 → 2026-03-23 · 2 obs
● 2026-03-23 16:51:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, k.gtld-servers.net, j.gtld-servers.net, b.gtld-servers.net... | - |
| 51topedu.com | dorthy.ns.cloudflare.com, rayden.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.192.249
NS records: dorthy.ns.cloudflare.com, rayden.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 51topedu.com (unsigned zone)
⏱️ Timing
Total: 185ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.63.136, 172.67.145.193 |
| AAAA | 2 | 2606:4700:3036::6815:3f88, 2606:4700:3035::ac43:91c1 |
| NS | 2 | dorthy.ns.cloudflare.com, rayden.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | dorthy.ns.cloudflare.com dns.cloudflare. |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (dorthy.ns.cloudflare.com, dorthy.ns.cloudflare.com, dorthy.ns.cloudflare.com...)
Analysis
Hierarchy
The parent of www.51topedu.com is 51topedu.com.
IP Addresses
51topedu.com maps to four IP numbers: 2606:4700:3035::ac43:91c1, 2606:4700:3036::6815:3f88, 104.21.63.136 and 172.67.145.193.
Other host names such as m.kfan.com.tw, ted-oviv.site, nationalweddingshow.co.uk, turboworld.us and analytics.zizcon.cz share IPs with 51topedu.com.
Name Servers
Two name servers dorthy.ns.cloudflare.com and rayden.ns.cloudflare.com handle the delegation for 51topedu.com.
51topedu.com shares the same name server setup as other domains, for example shenyangyp.com, seiron.com.cn, bjemstckj.com.cn, newhardware.com.cn and dzlkxd.com.
51topedu.com at least partially shares name servers with other domains, for example cosmicslot(0x736578)press.com, concretetest.co.uk, 50mm.live, creativeplanet.com.mx and oferlaor.com.
these name servers are commonly used alongside jen.ns.cloudflare.com name servers.
Host names with six IP numbers:
dorthy.ns.cloudflare.com points to 2606:4700:50::adf5:3af9, 2803:f800:50::6ca2:c0f9, 2a06:98c1:50::ac40:20f9, 108.162.192.249, 172.64.32.249 and 173.245.58.249.
rayden.ns.cloudflare.com points to 2606:4700:58::a29f:2ca3, 2803:f800:50::6ca2:c3a3, 2a06:98c1:50::ac40:23a3, 108.162.195.163, 162.159.44.163 and 172.64.35.163.