classprep.io - robtex.com
classprep.io
| DNSSEC | ⚠️ Not signed | ||||||
| A | 3.171.76.43🇺🇸 Amazon | ||||||
| PTR | server-3-171-76-43.iad89.r.cloudfront.net | ||||||
| A | 3.171.76.54🇺🇸 Amazon | ||||||
| A | 3.171.76.56🇺🇸 Amazon | ||||||
| A | 3.171.76.103🇺🇸 Amazon | ||||||
| NS | ns-1354.awsdns-41.org ⭐ | ||||||
| A | 2600:9000:5305:4a00::1🇺🇸 Amazon | ||||||
| PTR | ns-1354.awsdns-41.org | ||||||
| A | 205.251.197.74🇺🇸 Amazon | ||||||
| PTR | ns-1354.awsdns-41.org | ||||||
| NS | ns-1992.awsdns-57.co.uk | ||||||
| A | 2600:9000:5307:c800::1🇺🇸 Amazon | ||||||
| PTR | ns-1992.awsdns-57.co.uk | ||||||
| A | 205.251.199.200🇺🇸 Amazon | ||||||
| PTR | ns-1992.awsdns-57.co.uk | ||||||
| NS | ns-467.awsdns-58.com | ||||||
| A | 2600:9000:5301:d300::1🇺🇸 Amazon | ||||||
| PTR | ns-467.awsdns-58.com | ||||||
| A | 205.251.193.211🇺🇸 Amazon | ||||||
| PTR | ns-467.awsdns-58.com | ||||||
| NS | ns-724.awsdns-26.net | ||||||
| A | 2600:9000:5302:d400::1🇺🇸 Amazon | ||||||
| PTR | ns-724.awsdns-26.net | ||||||
| A | 205.251.194.212🇺🇸 Amazon | ||||||
| PTR | ns-724.awsdns-26.net | ||||||
| SOA | ns-1354.awsdns-41.orgawsdns-hostmaster@amazon.com serial=1 | ||||||
io
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.nic.io ⭐ 🔒 | ||||||
| NS | a2.nic.io 🔒 | ||||||
| NS | b0.nic.io 🔒 | ||||||
| NS | c0.nic.io 🔒 | ||||||
| SOA | a0.nic.iohostmaster@donuts.email serial=1771291657 | ||||||
Same first word
classprep.net |
classprep.io |
Similar names
DNS History
16 records (8 active, 8 former)
●NSns-1354.awsdns-41.org2026-02-18 → 2026-02-23 · 2 obs
● 2026-02-23 14:01:10
●NSns-1992.awsdns-57.co.uk2026-02-18 → 2026-02-23 · 2 obs
● 2026-02-23 14:01:10
●NSns-467.awsdns-58.com2026-02-18 → 2026-02-23 · 2 obs
● 2026-02-23 14:01:10
●NSns-724.awsdns-26.net2026-02-18 → 2026-02-23 · 2 obs
● 2026-02-23 14:01:10
●A3.171.76.1032026-02-23 → 2026-02-23 · 2 obs
● 2026-02-23 14:01:10
●A3.171.76.432026-02-23 → 2026-02-23 · 2 obs
● 2026-02-23 14:01:10
●A3.171.76.542026-02-23 → 2026-02-23 · 2 obs
● 2026-02-23 14:01:10
●A3.171.76.562026-02-23 → 2026-02-23 · 2 obs
● 2026-02-23 14:01:10
○A52.222.177.1142026-02-18 → 2026-02-21 · 6 obs
● 2026-02-18 22:58:16
○ 2026-02-19 06:03:36
● 2026-02-19 10:12:22
● 2026-02-21 15:34:08
○ 2026-02-23 14:01:10
○A52.222.177.122026-02-18 → 2026-02-21 · 6 obs
● 2026-02-18 22:58:16
○ 2026-02-19 06:03:36
● 2026-02-19 10:12:22
● 2026-02-21 15:34:08
○ 2026-02-23 14:01:10
○A52.222.177.182026-02-18 → 2026-02-21 · 6 obs
● 2026-02-18 22:58:16
○ 2026-02-19 06:03:36
● 2026-02-19 10:12:22
● 2026-02-21 15:34:08
○ 2026-02-23 14:01:10
○A52.222.177.522026-02-18 → 2026-02-21 · 6 obs
● 2026-02-18 22:58:16
○ 2026-02-19 06:03:36
● 2026-02-19 10:12:22
● 2026-02-21 15:34:08
○ 2026-02-23 14:01:10
○A99.84.215.22026-02-19 → 2026-02-19 · 5 obs
○ 2026-02-18 22:58:16
● 2026-02-19 06:03:36
○ 2026-02-19 10:12:22
○ 2026-02-23 14:01:10
○A99.84.215.202026-02-19 → 2026-02-19 · 5 obs
○ 2026-02-18 22:58:16
● 2026-02-19 06:03:36
○ 2026-02-19 10:12:22
○ 2026-02-23 14:01:10
○A99.84.215.492026-02-19 → 2026-02-19 · 5 obs
○ 2026-02-18 22:58:16
● 2026-02-19 06:03:36
○ 2026-02-19 10:12:22
○ 2026-02-23 14:01:10
○A99.84.215.592026-02-19 → 2026-02-19 · 5 obs
○ 2026-02-18 22:58:16
● 2026-02-19 06:03:36
○ 2026-02-19 10:12:22
○ 2026-02-23 14:01:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| classprep.io | ns-1992.awsdns-57.co.uk, ns-1354.awsdns-41.org, ns-467.awsdns-58.com, ns-724.awsdns-26.net | - |
✅ Authoritative Response
Server: 205.251.193.211
NS records: ns-1992.awsdns-57.co.uk, ns-1354.awsdns-41.org, ns-467.awsdns-58.com, ns-724.awsdns-26.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for classprep.io (unsigned zone)
⏱️ Timing
Total: 65ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 4 | 3.171.76.54, 3.171.76.43... |
| NS | 4 | ns-1354.awsdns-41.org, ns-1992.awsdns-57.co.uk... |
| SOA | 1 | ns-1354.awsdns-41.org awsdns-hostmaster. |
AI analysis
classprep.io resolves to four IP numbers: 3.171.76.43, 3.171.76.54, 3.171.76.56 and 3.171.76.103.
Other host names such as 0.0.breatheright.ca, hjboat.com, noexcuse.io, 240x8lz-qtejsykvgth0.alex.breatheright.ca and physicaltherapistsnearyou.com share IPs with classprep.io.
classprep.io is delegated to four name servers: ns-467.awsdns-58.com, ns-724.awsdns-26.net, ns-1354.awsdns-41.org and ns-1992.awsdns-57.co.uk.
classprep.io at least partially shares name servers with other domains, for instance noticiascaracol.com.co, ef3180684-frontier.amazon.com, vfgra.com, d371ftpwhkxgj8.cloudfront.net and imagebuilder.us-gov-west-1.amazonaws.com.
these name servers are commonly used with ns-924.awsdns-51.net, ns-1963.awsdns-53.co.uk, ns-238.awsdns-29.com, ns1.crossbar.org, ns2.crossbar.org, ns3.crossbar.org and ns4.crossbar.org.
Host names with two IP numbers: ns-467.awsdns-58.com points to 2600:9000:5301:d300::1 and 205.251.193.211; ns-724.awsdns-26.net points to 2600:9000:5302:d400::1 and 205.251.194.212; ns-1354.awsdns-41.org points to 2600:9000:5305:4a00::1 and 205.251.197.74; ns-1992.awsdns-57.co.uk points to 2600:9000:5307:c800::1 and 205.251.199.200.