open-exam-prep.com - robtex.com
open-exam-prep.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 216.150.1.1🇨🇦 Amazon216.150.1.0/24 EC2 Prefix | ||||||
| NS | harleigh.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::a29f:263a🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | harleigh.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c23a🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | harleigh.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:223a🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | harleigh.ns.cloudflare.com | ||||||
| A | 108.162.194.58🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | harleigh.ns.cloudflare.com | ||||||
| A | 162.159.38.58Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | harleigh.ns.cloudflare.com | ||||||
| A | 172.64.34.58🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | harleigh.ns.cloudflare.com | ||||||
| NS | matt.ns.cloudflare.com | ||||||
| A | 2606:4700:58::adf5:3b83🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | matt.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c183🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | matt.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2183🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | matt.ns.cloudflare.com | ||||||
| A | 108.162.193.131🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | matt.ns.cloudflare.com | ||||||
| A | 172.64.33.131🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | matt.ns.cloudflare.com | ||||||
| A | 173.245.59.131🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | matt.ns.cloudflare.com | ||||||
| MX | route2.mx.cloudflare.net ⭐ | ||||||
| A | 2606:4700:f5::e🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route2.mx.cloudflare.net | ||||||
| A | 2606:4700:f5::f🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route2.mx.cloudflare.net | ||||||
| A | 2606:4700:f5::10🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route2.mx.cloudflare.net | ||||||
| A | 162.159.205.17Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route2.mx.cloudflare.net | ||||||
| A | 162.159.205.18Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route2.mx.cloudflare.net | ||||||
| A | 162.159.205.19Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route2.mx.cloudflare.net | ||||||
| MX | route1.mx.cloudflare.net(27) | ||||||
| A | 2606:4700:f5::b🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route1.mx.cloudflare.net | ||||||
| A | 2606:4700:f5::c🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route1.mx.cloudflare.net | ||||||
| A | 2606:4700:f5::d🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route1.mx.cloudflare.net | ||||||
| A | 162.159.205.11Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route1.mx.cloudflare.net | ||||||
| A | 162.159.205.12Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route1.mx.cloudflare.net | ||||||
| A | 162.159.205.13Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route1.mx.cloudflare.net | ||||||
| MX | route3.mx.cloudflare.net(79) | ||||||
| A | 2606:4700:f5::11🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route3.mx.cloudflare.net | ||||||
| A | 2606:4700:f5::12🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route3.mx.cloudflare.net | ||||||
| A | 2606:4700:f5::13🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route3.mx.cloudflare.net | ||||||
| A | 162.159.205.23Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route3.mx.cloudflare.net | ||||||
| A | 162.159.205.24Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route3.mx.cloudflare.net | ||||||
| A | 162.159.205.25Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route3.mx.cloudflare.net | ||||||
| TXT | ezoic-domain-verification=kEyJMRjT9shjpD8rLpQz9m8vgzx8Iz | ||||||
| TXT | google-site-verification=dD_fsG9M7VGECXW31y42IqsFYr9sR2pLmtWR2pwrWSA | ||||||
| TXT | v=spf1 include:_spf.mx.cloudflare.net ~all | ||||||
| SOA | harleigh.ns.cloudflare.comdns@cloudflare.com serial=2398257766 | ||||||
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=1774363897 | ||||||
Same first word
open-exam-prep.com |
DNS History
6 records (6 active, 0 former)
●NSharleigh.ns.cloudflare.com2026-03-23 → 2026-03-24 · 2 obs
● 2026-03-24 15:20:24
●NSmatt.ns.cloudflare.com2026-03-23 → 2026-03-24 · 2 obs
● 2026-03-24 15:20:24
●MXroute1.mx.cloudflare.net2026-03-23 → 2026-03-24 · 2 obs
● 2026-03-24 15:20:24
●MXroute2.mx.cloudflare.net2026-03-23 → 2026-03-24 · 2 obs
● 2026-03-24 15:20:24
●MXroute3.mx.cloudflare.net2026-03-23 → 2026-03-24 · 2 obs
● 2026-03-24 15:20:24
●A216.150.1.12026-03-23 → 2026-03-24 · 2 obs
● 2026-03-24 15:20:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | m.gtld-servers.net, h.gtld-servers.net, f.gtld-servers.net, d.gtld-servers.net... | - |
| open-exam-prep.com | matt.ns.cloudflare.com, harleigh.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.193.131
NS records: matt.ns.cloudflare.com, harleigh.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for open-exam-prep.com (unsigned zone)
⏱️ Timing
Total: 181ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 216.150.1.1 |
| NS | 2 | harleigh.ns.cloudflare.com, matt.ns.cloudflare.com |
| MX | 3 | route1.mx.cloudflare.net (pri: 27), route2.mx.cloudflare.net (pri: 4)... |
| TXT | 3 | ezoic-domain-verification=kEyJMRjT9shjpD, google-site-verification=dD_fsG9M7VGECXW... |
| SOA | 1 | harleigh.ns.cloudflare.com dns.cloudflar |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (matt.ns.cloudflare.com, matt.ns.cloudflare.com, matt.ns.cloudflare.com...)
Analysis
IP Addresses
open-exam-prep.com points to a single IP address: 216.150.1.1.
Other host names such as wintermarch.com, c.inc, amols.com, idealaya.com and admin.sworp.com share IP numbers with open-exam-prep.com.
Name Servers
open-exam-prep.com is delegated to two name servers: harleigh.ns.cloudflare.com and matt.ns.cloudflare.com.
open-exam-prep.com uses the same name server setup as other domains, including dson.cloud, devhack.net, logln-jcb.cfd, ranchen.org and monzacamper.it.
At least part of the name servers for open-exam-prep.com are shared with other domains, for instance trkcapybara2.org, timandfaith.com, lfc.org.hk, vab.com.my and caokakao.com.
These name servers are commonly used with peyton.ns.cloudflare.com, josh.ns.cloudflare.com, armando.ns.cloudflare.com and dora.ns.cloudflare.com.
Host names with six IP numbers:
harleigh.ns.cloudflare.com points to: 2606:4700:50::a29f:263a, 2803:f800:50::6ca2:c23a, 2a06:98c1:50::ac40:223a, 108.162.194.58, 162.159.38.58 and 172.64.34.58.
matt.ns.cloudflare.com points to: 2606:4700:58::adf5:3b83, 2803:f800:50::6ca2:c183, 2a06:98c1:50::ac40:2183, 108.162.193.131, 172.64.33.131 and 173.245.59.131.
Mail Servers
Three mail servers handle open-exam-prep.com: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.
open-exam-prep.com shares at least some mail servers with other domains, for example tensid.ch, boems.co, mfit.ca, xservers.top and pandoraproject.net.
Host names with six IP numbers: route1.mx.cloudflare.net points to 2606:4700:f5::b, 2606:4700:f5::c, 2606:4700:f5::d, 162.159.205.11, 162.159.205.12 and 162.159.205.13; route2.mx.cloudflare.net points to 2606:4700:f5::e, 2606:4700:f5::f, 2606:4700:f5::10, 162.159.205.17, 162.159.205.18 and 162.159.205.19; route3.mx.cloudflare.net points to 2606:4700:f5::11, 2606:4700:f5::12, 2606:4700:f5::13, 162.159.205.23, 162.159.205.24 and 162.159.205.25.