ptcoding.edu.vn - robtex.com
ptcoding.edu.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3037::6815:32dc🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::ac43:a7a0🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.50.220Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.167.160🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | raquel.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::a29f:26d2🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | raquel.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c2d2🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | raquel.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:22d2🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | raquel.ns.cloudflare.com | ||||||
| A | 108.162.194.210🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | raquel.ns.cloudflare.com | ||||||
| A | 162.159.38.210Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | raquel.ns.cloudflare.com | ||||||
| A | 172.64.34.210🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | raquel.ns.cloudflare.com | ||||||
| NS | tosana.ns.cloudflare.com | ||||||
| A | 2606:4700:58::a29f:2c2b🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | tosana.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c32b🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | tosana.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:232b🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | tosana.ns.cloudflare.com | ||||||
| A | 108.162.195.43🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | tosana.ns.cloudflare.com | ||||||
| A | 162.159.44.43Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | tosana.ns.cloudflare.com | ||||||
| A | 172.64.35.43🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | tosana.ns.cloudflare.com | ||||||
| TXT | google-site-verification=ZEimWYt5yOXoSmdOGF-_AG747FEUGbClAMTmeL0nAA8 | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 | 104.21.50.220, 172.67.167.160 | ||||||
| IPv6 | 2606:4700:3037::6815:32dc, 2606:4700:3037::ac43:a7a0 | ||||||
| SOA | raquel.ns.cloudflare.comdns@cloudflare.com serial=2397413265 | ||||||
edu.vn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | dns-master.vnnic.vn ⭐ | ||||||
| NS | a.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | b.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | c.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | d.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | e.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | f.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | g.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | h.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| SOA | dns-master.vnnic.vnpostmaster@vnnic.vn serial=2018553944 | ||||||
Same first word
ptcoding.edu.vn |
DNS History
8 records (6 active, 2 former)
●NSraquel.ns.cloudflare.com2026-02-17 → 2026-03-26 · 2 obs
● 2026-03-26 09:58:00
●NStosana.ns.cloudflare.com2026-02-17 → 2026-03-26 · 2 obs
● 2026-03-26 09:58:00
●A104.21.50.2202026-02-17 → 2026-03-26 · 5 obs
● 2026-02-24 20:04:44
○ 2026-02-27 07:21:36
● 2026-03-02 11:09:56
● 2026-03-26 09:58:00
○A172.64.80.12026-02-27 → 2026-02-27 · 4 obs
● 2026-02-27 07:21:36
○ 2026-03-02 11:09:56
○ 2026-03-26 09:58:00
●A172.67.167.1602026-02-17 → 2026-03-26 · 5 obs
● 2026-02-24 20:04:44
○ 2026-02-27 07:21:36
● 2026-03-02 11:09:56
● 2026-03-26 09:58:00
○A2606:4700:130:436c:6f75:6466:6c61:72652026-02-27 → 2026-02-27 · 4 obs
● 2026-02-27 07:21:36
○ 2026-03-02 11:09:56
○ 2026-03-26 09:58:00
●A2606:4700:3037::6815:32dc2026-02-17 → 2026-03-26 · 5 obs
● 2026-02-24 20:04:44
○ 2026-02-27 07:21:36
● 2026-03-02 11:09:56
● 2026-03-26 09:58:00
●A2606:4700:3037::ac43:a7a02026-02-17 → 2026-03-26 · 5 obs
● 2026-02-24 20:04:44
○ 2026-02-27 07:21:36
● 2026-03-02 11:09:56
● 2026-03-26 09:58:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn... | - |
| ptcoding.edu.vn | raquel.ns.cloudflare.com, tosana.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.34.210
NS records: raquel.ns.cloudflare.com, tosana.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ptcoding.edu.vn (unsigned zone)
⏱️ Timing
Total: 807ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.50.220, 172.67.167.160 |
| AAAA | 2 | 2606:4700:3037::6815:32dc, 2606:4700:3037::ac43:a7a0 |
| NS | 2 | raquel.ns.cloudflare.com, tosana.ns.cloudflare.com |
| TXT | 1 | google-site-verification=ZEimWYt5yOXoSmd |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | raquel.ns.cloudflare.com dns.cloudflare. |
Analysis
IP Addresses
ptcoding.edu.vn points to four IP numbers: 2606:4700:3037::6815:32dc, 2606:4700:3037::ac43:a7a0, 104.21.50.220 and 172.67.167.160.
Other host names, for instance florencerotary.org, 86687.cn, gdsincere.com, www.cryptocashbackcoin.com.cdn.cloudflare.net and ns1.projectvolcano.org share IP numbers with ptcoding.edu.vn.
Name Servers
Delegation for ptcoding.edu.vn rests with two name servers, raquel.ns.cloudflare.com and tosana.ns.cloudflare.com.
ptcoding.edu.vn shares the same name server setup as other domains, including mebster.com.ua, yallagoal.stream, alhilal-sa.com, market-a.com.ua and flync.com.br.
ptcoding.edu.vn at least partially shares name servers with other domains, for instance quietlinks.com, newmember.ninja, coognaveltvault.com, wernerteams.com and streamedia.org.
these name servers are commonly used with amanda.ns.cloudflare.com, ivan.ns.cloudflare.com and alexis.ns.cloudflare.com.
Host names with six IP numbers: raquel.ns.cloudflare.com points to: 2606:4700:50::a29f:26d2, 2803:f800:50::6ca2:c2d2, 2a06:98c1:50::ac40:22d2, 108.162.194.210, 162.159.38.210 and 172.64.34.210. tosana.ns.cloudflare.com points to: 2606:4700:58::a29f:2c2b, 2803:f800:50::6ca2:c32b, 2a06:98c1:50::ac40:232b, 108.162.195.43, 162.159.44.43 and 172.64.35.43.