production.gradesfirst.com - robtex.com
production.gradesfirst.com
| DNSSEC | ⚠️ Not signed | ||||||
gradesfirst.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 18.161.21.8🇺🇸 Amazon18.161.16.0/21 | ||||||
| A | 18.161.21.14🇺🇸 Amazon18.161.16.0/21 | ||||||
| A | 18.161.21.16🇺🇸 Amazon18.161.16.0/21 | ||||||
| A | 18.161.21.90🇺🇸 Amazon18.161.16.0/21 | ||||||
| NS | ns-163.awsdns-20.com ⭐ | ||||||
| NS | ns-1469.awsdns-55.org | ||||||
| NS | ns-1801.awsdns-33.co.uk | ||||||
| NS | ns-602.awsdns-11.net | ||||||
| MX | aspmx.l.google.com ⭐ | ||||||
| MX | alt1.aspmx.l.google.com(20) | ||||||
| MX | aspmx2.googlemail.com(30) | ||||||
| TXT | v=spf1 a:o1.email.gradesfirst.com include:aspmx.googlemail.com include:sendgr... | ||||||
| SOA | ns-163.awsdns-20.comawsdns-hostmaster@amazon.com serial=1 | ||||||
Same first word
Similar names
DNS History
1 record (0 active, 1 former)
○A107.20.216.1272017-10-18 → 2017-10-18 · 3 obs
● 2017-10-18 05:50:08
○ 2026-04-05 19:28:02
○ 2026-04-24 05:34:02
○ 2026-04-05 19:28:02
○ 2026-04-24 05:34:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| gradesfirst.com | ns-163.awsdns-20.com, ns-602.awsdns-11.net, ns-1801.awsdns-33.co.uk, ns-1469.awsdns-55.org | 2 records |
✅ Authoritative Response
Server:205.251.197.189
NS records: ns-163.awsdns-20.com, ns-602.awsdns-11.net, ns-1801.awsdns-33.co.uk, ns-1469.awsdns-55.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for gradesfirst.com (unsigned zone)
⏱️ Timing
Total: 643ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-163.awsdns-20.com, ns-163.awsdns-20.com)