prefcoursengg.org - robtex.com
prefcoursengg.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3034::ac43:a77f🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3036::6815:5b40🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.91.64Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.167.127🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | meiling.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::a29f:26fe🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | meiling.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c2fe🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | meiling.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:22fe🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | meiling.ns.cloudflare.com | ||||||
| A | 108.162.194.254🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | meiling.ns.cloudflare.com | ||||||
| A | 162.159.38.254Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | meiling.ns.cloudflare.com | ||||||
| A | 172.64.34.254🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | meiling.ns.cloudflare.com | ||||||
| NS | osmar.ns.cloudflare.com | ||||||
| A | 2606:4700:58::a29f:2c7c🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | osmar.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c37c🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | osmar.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:237c🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | osmar.ns.cloudflare.com | ||||||
| A | 108.162.195.124🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | osmar.ns.cloudflare.com | ||||||
| A | 162.159.44.124Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | osmar.ns.cloudflare.com | ||||||
| A | 172.64.35.124🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | osmar.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.91.64, 172.67.167.127 | ||||||
| IPv6 hints | 2606:4700:3034::ac43:a77f, 2606:4700:3036::6815:5b40 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=145, name=cloudflare-ech.com | ||||||
| SOA | meiling.ns.cloudflare.comdns@cloudflare.com serial=2397341701 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1776637367 | ||||||
Same first word
prefcoursengg.org |
DNS History
6 records (6 active, 0 former)
●NSmeiling.ns.cloudflare.com2026-04-15 → 2026-04-19 · 2 obs
● 2026-04-19 22:55:28
●NSosmar.ns.cloudflare.com2026-04-15 → 2026-04-19 · 2 obs
● 2026-04-19 22:55:28
●A104.21.91.642026-04-15 → 2026-04-19 · 2 obs
● 2026-04-19 22:55:28
●A172.67.167.1272026-04-15 → 2026-04-19 · 2 obs
● 2026-04-19 22:55:28
●A2606:4700:3034::ac43:a77f2026-04-15 → 2026-04-19 · 2 obs
● 2026-04-19 22:55:28
●A2606:4700:3036::6815:5b402026-04-15 → 2026-04-19 · 2 obs
● 2026-04-19 22:55:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | d0.org.afilias-nst.org, b2.org.afilias-nst.org, b0.org.afilias-nst.org | - |
| prefcoursengg.org | meiling.ns.cloudflare.com, osmar.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.35.124
NS records: meiling.ns.cloudflare.com, osmar.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for prefcoursengg.org (unsigned zone)
⏱️ Timing
Total: 1338ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.91.64, 172.67.167.127 |
| AAAA | 2 | 2606:4700:3036::6815:5b40, 2606:4700:3034::ac43:a77f |
| NS | 2 | meiling.ns.cloudflare.com, osmar.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | meiling.ns.cloudflare.com dns.cloudflare |
Analysis
IP Addresses
prefcoursengg.org points to four IP numbers: 2606:4700:3034::ac43:a77f, 2606:4700:3036::6815:5b40, 104.21.91.64 and 172.67.167.127.
Other host names, for instance molebuild.com, rodimudanzas.com, xceedspeed.com, nationalmartialartstn.com and accountme.click share IP numbers with prefcoursengg.org.
Name Servers
Delegation for prefcoursengg.org rests with two name servers, meiling.ns.cloudflare.com and osmar.ns.cloudflare.com.
prefcoursengg.org shares the same name server setup as other domains, including lululemonmen.com, djbonebrakemusic.com, bradleyoverheaddoor.com, laoluonb.workers.dev and bay789.bet.
prefcoursengg.org at least partially shares name servers with other domains, for instance mac-ronodego.click, tmtm69-vip.monster, nattyday.com, 1whstz.life and fsshly.com.
These name servers are commonly used with leia.ns.cloudflare.com and vasilii.ns.cloudflare.com.
Host names with six IP numbers: meiling.ns.cloudflare.com points to: 2606:4700:50::a29f:26fe, 2803:f800:50::6ca2:c2fe, 2a06:98c1:50::ac40:22fe, 108.162.194.254, 162.159.38.254 and 172.64.34.254. osmar.ns.cloudflare.com points to: 2606:4700:58::a29f:2c7c, 2803:f800:50::6ca2:c37c, 2a06:98c1:50::ac40:237c, 108.162.195.124, 162.159.44.124 and 172.64.35.124.