null2.mail.cornell.edu - robtex.com
null2.mail.cornell.edu
| DNSSEC | ⚠️ Not signed | ||||||
| A | 128.253.83.230🇺🇸 CORNELL-AS128.253.0.0/16 Cornell University Network Engineering Rhodes Hall, 757 136 Hoy Road Ithaca, NY 14853 | ||||||
| PTR | null2.mail.cornell.edu | ||||||
mail.cornell.edu
| DNSSEC | ⚠️ Not signed | ||||||
| MX | mail-cornell-edu.mail.protection.outlook.com ⭐ | ||||||
| TXT | v=spf1 include:spf.protection.outlook.com -all | ||||||
WOT: SAFE (61/100)
Same first word
Similar names
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| edu | a.edu-servers.net, b.edu-servers.net, c.edu-servers.net, d.edu-servers.net... | 26 records |
| cornell.edu | bigred.cit.cornell.edu, cudns.cit.cornell.edu, dns.cit.cornell.edu, drdns.cit.cornell.edu... | 5 records |
✅ Authoritative Response
Server:128.253.180.35
NS records: bigred.cit.cornell.edu, cudns.cit.cornell.edu, dns.cit.cornell.edu, drdns.cit.cornell.edu, drdns2.cit.cornell.edu
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cornell.edu (unsigned zone)
⏱️ Timing
Total: 253ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 128.253.83.230 |
📌 Glue Records Collected
Total: 31
In-bailiwick: 5 (bigred.cit.cornell.edu, cudns.cit.cornell.edu, dns.cit.cornell.edu...)
Out-of-bailiwick: 26 (a.edu-servers.net, a.edu-servers.net, b.edu-servers.net...)
Analysis
IP Addresses
null2.mail.cornell.edu points to a single IP address: 128.253.83.230.