classbooks.io - robtex.com
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classbooks.io
| DNSSEC | ⚠️ Not signed | ||||||
| A | 3.5.16.94🇺🇸 Amazon | ||||||
| PTR | s3-website.us-east-1.amazonaws.com | ||||||
| A | 16.15.181.235🇺🇸 Amazon | ||||||
| A | 16.15.184.227🇺🇸 Amazon | ||||||
| A | 16.15.187.254🇺🇸 Amazon | ||||||
| A | 16.182.64.253🇺🇸 Amazon | ||||||
| A | 16.182.65.13🇺🇸 Amazon | ||||||
| A | 52.216.234.58🇺🇸 Amazon | ||||||
| A | 52.217.49.227🇺🇸 Amazon | ||||||
| NS | ns-1064.awsdns-05.org ⭐ | ||||||
| A | 2600:9000:5304:2800::1 Amazon | ||||||
| A | 205.251.196.40 Amazon | ||||||
| NS | ns-201.awsdns-25.com | ||||||
| A | 2600:9000:5300:c900::1 Amazon | ||||||
| A | 205.251.192.201 Amazon | ||||||
| NS | ns-2045.awsdns-63.co.uk | ||||||
| A | 2600:9000:5307:fd00::1 Amazon | ||||||
| A | 205.251.199.253 Amazon | ||||||
| NS | ns-825.awsdns-39.net | ||||||
| A | 2600:9000:5303:3900::1 Amazon | ||||||
| A | 205.251.195.57 Amazon | ||||||
| SOA | ns-1064.awsdns-05.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
DNS History
12 records (12 active, 0 former)
●NSns-1064.awsdns-05.org2026-02-17 → 2026-02-17 · 2 obs
● 2026-02-17 13:32:12
●NSns-201.awsdns-25.com2026-02-17 → 2026-02-17 · 2 obs
● 2026-02-17 13:32:12
●NSns-2045.awsdns-63.co.uk2026-02-17 → 2026-02-17 · 2 obs
● 2026-02-17 13:32:12
●NSns-825.awsdns-39.net2026-02-17 → 2026-02-17 · 2 obs
● 2026-02-17 13:32:12
●A16.15.181.2352026-02-17 → 2026-02-17 · 2 obs
● 2026-02-17 13:32:12
●A16.15.184.2272026-02-17 → 2026-02-17 · 2 obs
● 2026-02-17 13:32:12
●A16.15.187.2542026-02-17 → 2026-02-17 · 2 obs
● 2026-02-17 13:32:12
●A16.182.64.2532026-02-17 → 2026-02-17 · 2 obs
● 2026-02-17 13:32:12
●A16.182.65.132026-02-17 → 2026-02-17 · 2 obs
● 2026-02-17 13:32:12
●A3.5.16.942026-02-17 → 2026-02-17 · 2 obs
● 2026-02-17 13:32:12
●A52.216.234.582026-02-17 → 2026-02-17 · 2 obs
● 2026-02-17 13:32:12
●A52.217.49.2272026-02-17 → 2026-02-17 · 2 obs
● 2026-02-17 13:32:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| io | c0.nic.io, a2.nic.io, a0.nic.io, b0.nic.io | - |
| classbooks.io | ns-201.awsdns-25.com, ns-2045.awsdns-63.co.uk, ns-825.awsdns-39.net, ns-1064.awsdns-05.org | - |
✅ Authoritative Response
Server: 205.251.196.40
NS records: ns-201.awsdns-25.com, ns-2045.awsdns-63.co.uk, ns-825.awsdns-39.net, ns-1064.awsdns-05.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for classbooks.io (unsigned zone)
⏱️ Timing
Total: 749ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 8 | 16.15.194.4, 54.231.231.69... |
| NS | 4 | ns-1064.awsdns-05.org, ns-201.awsdns-25.com... |
| SOA | 1 | ns-1064.awsdns-05.org awsdns-hostmaster. |
AI analysis
Eight IP numbers are targeted by classbooks.io: 3.5.16.94, 16.15.181.235, 16.15.184.227, 16.15.187.254, 16.182.64.253, 16.182.65.13, 52.216.234.58 and 52.217.49.227.
other host names including zeelspa.com, www.humanventures.co, yardarmour.org, fsbaltus.org and sensigen.com share IP numbers with classbooks.io.
classbooks.io is delegated to four name servers: ns-201.awsdns-25.com, ns-825.awsdns-39.net, ns-1064.awsdns-05.org and ns-2045.awsdns-63.co.uk.
classbooks.io at least partially shares name servers with other domains, for instance motivationworks.co.jp, gh.awsapps.com, lib.k-state.edu, app-ads-host.com and athomeveterinarycare.com.
These name servers are commonly used with ns-147.awsdns-18.com, ns-150.awsdns-18.com, ns-1853.awsdns-39.co.uk, ns-334.awsdns-41.com and ns-1078.awsdns-06.org.
Host names with two IP numbers:
ns-201.awsdns-25.com points to 2600:9000:5300:c900::1 and 205.251.192.201; ns-825.awsdns-39.net points to 2600:9000:5303:3900::1 and 205.251.195.57; ns-1064.awsdns-05.org points to 2600:9000:5304:2800::1 and 205.251.196.40; ns-2045.awsdns-63.co.uk points to 2600:9000:5307:fd00::1 and 205.251.199.253.