Data as of Nov 5, 2026
Autonomous system

AS19299

The Northern Trust Company

Announces 5,120 addresses in 9 prefixes. None of it is anonymizer space.

Type
Business
US

Announced prefixes

Arrived
PrefixTypeHolderRPKI
12.148.180.0/23
since Mar 2020
BusinessAT&T Enterprises, LLC
12.148.182.0/23
since Mar 2020
BusinessAT&T Enterprises, LLC
199.16.200.0/21
since Jun 2025
Business
199.16.200.0/23
since Mar 2020
Business
199.16.202.0/23
since Mar 2020
Business
199.16.204.0/22
since Mar 2020
Business
208.95.144.0/23
since Mar 2020
Business
208.95.146.0/23
since Mar 2020
Business
208.95.148.0/22
since Mar 2020
Business

Network & history

Routing patterns

How its announcements have moved

Arrivals

Year each prefix's current origin began announcing it