The IP API The IP API
// ASN

AS3378

MCI-ASN - Verizon Business, US

Detailed information about the Autonomous System. Need another one? Look up a different ASN.

ASN
AS3378
Organization
Verizon Business
Description
MCI-ASN - Verizon Business, US
Country
US
State / Region
VA
City
Ashburn
Address
22001 Loudoun County Pkwy
Registry (RIR)
ARIN
Created
2007-03-21
Updated
2025-10-28
IPv4 Prefixes
38
IPv6 Prefixes
0

IPv4 Prefixes

38 total · showing first 10
142.77.1.0/24
142.77.14.0/24
142.77.32.0/24
142.77.46.0/24
142.77.72.0/21
142.77.8.0/22
142.77.80.0/20
146.1.1.0/24
146.1.16.0/23
146.1.192.0/19

What is AS3378?

AS3378 is an Autonomous System Number (ASN) assigned to Verizon Business. An ASN identifies a network or group of IP prefixes operated under a common routing policy in the BGP protocol.

Looking for more ASN data?

Use our ASN Lookup Tool for real-time WHOIS queries, or explore our API documentation to integrate ASN data into your applications.