prepstep4year.com - robtex.com
prepstep4year.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 3.221.14.183🇺🇸 Amazon | ||||||
| PTR | ec2-3-221-14-183.compute-1.amazonaws.com | ||||||
| A | 34.202.98.190🇺🇸 Amazon | ||||||
| NS | ns-640.awsdns-16.net ⭐ | ||||||
| A | 2600:9000:5302:8000::1🇺🇸 Amazon | ||||||
| PTR | ns-640.awsdns-16.net | ||||||
| A | 205.251.194.128🇺🇸 Amazon | ||||||
| PTR | ns-640.awsdns-16.net | ||||||
| NS | ns-1198.awsdns-21.org | ||||||
| A | 2600:9000:5304:ae00::1🇺🇸 Amazon | ||||||
| PTR | ns-1198.awsdns-21.org | ||||||
| A | 205.251.196.174🇺🇸 Amazon | ||||||
| PTR | ns-1198.awsdns-21.org | ||||||
| NS | ns-1698.awsdns-20.co.uk | ||||||
| A | 2600:9000:5306:a200::1🇺🇸 Amazon | ||||||
| PTR | ns-1698.awsdns-20.co.uk | ||||||
| A | 205.251.198.162🇺🇸 Amazon | ||||||
| PTR | ns-1698.awsdns-20.co.uk | ||||||
| NS | ns-447.awsdns-55.com | ||||||
| A | 2600:9000:5301:bf00::1🇺🇸 Amazon | ||||||
| PTR | ns-447.awsdns-55.com | ||||||
| A | 205.251.193.191🇺🇸 Amazon | ||||||
| PTR | ns-447.awsdns-55.com | ||||||
| SOA | ns-640.awsdns-16.netawsdns-hostmaster@amazon.com serial=1 | ||||||
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=1771291435 | ||||||
DNS History
8 records (6 active, 2 former)
●NSns-1198.awsdns-21.org2018-05-08 → 2026-02-24 · 2 obs
● 2026-02-24 09:33:52
●NSns-1698.awsdns-20.co.uk2018-05-08 → 2026-02-24 · 2 obs
● 2026-02-24 09:33:52
●NSns-447.awsdns-55.com2018-05-08 → 2026-02-24 · 2 obs
● 2026-02-24 09:33:52
●NSns-640.awsdns-16.net2018-05-08 → 2026-02-24 · 2 obs
● 2026-02-24 09:33:52
●A3.221.14.1832026-02-24 → 2026-02-24 · 2 obs
● 2026-02-24 09:33:52
○A34.199.133.2162018-05-08 → 2018-05-08 · 2 obs
○ 2026-02-24 09:33:52
●A34.202.98.1902026-02-24 → 2026-02-24 · 2 obs
● 2026-02-24 09:33:52
○A54.164.201.2402018-05-08 → 2018-05-08 · 2 obs
○ 2026-02-24 09:33:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| prepstep4year.com | ns-640.awsdns-16.net, ns-447.awsdns-55.com, ns-1698.awsdns-20.co.uk, ns-1198.awsdns-21.org | - |
✅ Authoritative Response
Server: 205.251.194.128
NS records: ns-640.awsdns-16.net, ns-447.awsdns-55.com, ns-1698.awsdns-20.co.uk, ns-1198.awsdns-21.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for prepstep4year.com (unsigned zone)
⏱️ Timing
Total: 63ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 34.202.98.190, 3.221.14.183 |
| NS | 4 | ns-1198.awsdns-21.org, ns-1698.awsdns-20.co.uk... |
| SOA | 1 | ns-640.awsdns-16.net awsdns-hostmaster.a |
AI analysis
prepstep4year.com points to two IP numbers: 3.221.14.183 and 34.202.98.190.
Other host names such as ebscolearning.com, amabyebscolearning.com, accel-5.com, learnx.com and learnatest.com share IP numbers with prepstep4year.com.
prepstep4year.com is delegated to four name servers: ns-447.awsdns-55.com, ns-640.awsdns-16.net, ns-1198.awsdns-21.org and ns-1698.awsdns-20.co.uk.
At least part of the name servers for prepstep4year.com are shared with other domains, for instance howl.fm, sfhpa.com, eveonline.co, arrow.freelancer.com and drlindayoungdnp.com.
These name servers are commonly used with ns-389.awsdns-48.com, ns-1321.awsdns-37.org, ns-1797.awsdns-32.co.uk and ns-601.awsdns-11.net.
Host names with two IP numbers:
ns-447.awsdns-55.com points to: 2600:9000:5301:bf00::1 and 205.251.193.191
ns-640.awsdns-16.net points to: 2600:9000:5302:8000::1 and 205.251.194.128
ns-1198.awsdns-21.org points to: 2600:9000:5304:ae00::1 and 205.251.196.174
ns-1698.awsdns-20.co.uk points to: 2600:9000:5306:a200::1 and 205.251.198.162