phjoin.courses - robtex.com
phjoin.courses
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3037::6815:4d0b🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::ac43:cb15🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.77.11Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.203.21🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | amanda.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::adf5:3a3f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | amanda.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c03f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | amanda.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:203f🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | amanda.ns.cloudflare.com | ||||||
| A | 108.162.192.63🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | amanda.ns.cloudflare.com | ||||||
| A | 172.64.32.63🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | amanda.ns.cloudflare.com | ||||||
| A | 173.245.58.63🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | amanda.ns.cloudflare.com | ||||||
| NS | piers.ns.cloudflare.com | ||||||
| A | 2606:4700:58::a29f:2c10🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | piers.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c310🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | piers.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2310🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | piers.ns.cloudflare.com | ||||||
| A | 108.162.195.16🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | piers.ns.cloudflare.com | ||||||
| A | 162.159.44.16Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | piers.ns.cloudflare.com | ||||||
| A | 172.64.35.16🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | piers.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.77.11, 172.67.203.21 | ||||||
| IPv6 hints | 2606:4700:3037::6815:4d0b, 2606:4700:3037::ac43:cb15 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=11, name=cloudflare-ech.com | ||||||
| SOA | amanda.ns.cloudflare.comdns@cloudflare.com serial=2412071876 | ||||||
courses
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.nic.courses ⭐ | ||||||
| NS | b.nic.courses | ||||||
| NS | c.nic.courses | ||||||
| NS | x.nic.courses | ||||||
| NS | y.nic.courses | ||||||
| NS | z.nic.courses | ||||||
| SOA | a.nic.coursesadmin@tldns.godaddy serial=1787177675 | ||||||
Same first word
phjoin.casa |
phjoin.courses |
phjoin.id |
phjoin.boats |
phjoin.cfd |
phjoin.bio |
phjoin.art |
phjoin.lol |
phjoin.ws |
phjoin.app |
Similar names
Previous names
Next names
DNS History
6 records (6 active, 0 former)
●NSamanda.ns.cloudflare.com2026-08-14 → 2026-08-19 · 2 obs
● 2026-08-19 23:00:26
●NSpiers.ns.cloudflare.com2026-08-14 → 2026-08-19 · 2 obs
● 2026-08-19 23:00:26
●A104.21.77.112026-08-14 → 2026-08-19 · 2 obs
● 2026-08-19 23:00:26
●A172.67.203.212026-08-14 → 2026-08-19 · 2 obs
● 2026-08-19 23:00:26
●A2606:4700:3037::6815:4d0b2026-08-14 → 2026-08-19 · 2 obs
● 2026-08-19 23:00:26
●A2606:4700:3037::ac43:cb152026-08-14 → 2026-08-19 · 2 obs
● 2026-08-19 23:00:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| courses | z.nic.courses, x.nic.courses, b.nic.courses, a.nic.courses... | 12 records |
| phjoin.courses | piers.ns.cloudflare.com, amanda.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.32.63
NS records: piers.ns.cloudflare.com, amanda.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for phjoin.courses (unsigned zone)
⏱️ Timing
Total: 511ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.77.11, 172.67.203.21 |
| AAAA | 2 | 2606:4700:3037::6815:4d0b, 2606:4700:3037::ac43:cb15 |
| NS | 2 | amanda.ns.cloudflare.com, piers.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | amanda.ns.cloudflare.com dns.cloudflare. |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (a.nic.courses, b.nic.courses, c.nic.courses...)
Analysis
IP Addresses
phjoin.courses has four IP addresses: 104.21.77.11, 172.67.203.21, 2606:4700:3037::6815:4d0b and 2606:4700:3037::ac43:cb15.
fcaweb.org.cdn.cloudflare.net, casino-utan-registrering.io, vfj-giessen.cloud and two other host names share IP numbers with phjoin.courses.
Name Servers
phjoin.courses is delegated to two name servers: amanda.ns.cloudflare.com and piers.ns.cloudflare.com.
phjoin.courses uses the same name servers as several other domains — among them niceph.beer, j8.lat, ss-777.ph and two more.
phjoin.courses has at least partial name server overlap with other domains, such as adult-acne.net, vault-apex.com, eibsystems.com and two others.
It is common to find these name servers paired with the name servers colin.ns.cloudflare.com.
Hostnames that resolve to 6 IP addresses:
amanda.ns.cloudflare.com resolves to 108.162.192.63, 172.64.32.63, 173.245.58.63 and 3 other IP addresses.
piers.ns.cloudflare.com resolves to 108.162.195.16, 162.159.44.16, 172.64.35.16 and 3 other IP addresses.