ASN Lookup Tool

Brown Brothers Harriman & Company bbh.com US US 19 Routes

AS Data

AS18438

AS18438 – Brown Brothers Harriman & Company

AS Number 18438
AS Name BROWNB
Organization Brown Brothers Harriman & Company(bbh-3)
Country US
Website bbh.com
Number of IPv4 Routes 19
Number of IPv6 Routes 0
ASN type BUSINESS
Registry ARIN
Date Allocated 2000-08-29

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Use ASN data for AS18438 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
192.200.7.0/24 256
192.200.2.0/24 256
204.136.28.0/24 256
204.136.31.0/24 256
204.136.26.0/24 256
204.136.20.0/24 256
204.136.24.0/24 256
192.200.1.0/24 256
204.136.27.0/24 256
204.136.16.0/24 256

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       18438
ASName:         BROWNB
ASHandle:       AS18438
RegDate:        2000-08-29
Updated:        2017-04-21    
Ref:            https://rdap.arin.net/registry/autnum/18438


OrgName:        Brown Brothers Harriman & Company
OrgId:          BBH-3
Address:        Harborside Financial Center
Address:        185 Hudson Street, Suite 1150
City:           Jersey City
StateProv:      NJ
PostalCode:     07311
Country:        US
RegDate:        1992-07-22
Updated:        2019-08-13
Ref:            https://rdap.arin.net/registry/entity/BBH-3


OrgAbuseHandle: HOSTM1081-ARIN
OrgAbuseName:   hostmaster
OrgAbusePhone:  +1-201-418-5600 
OrgAbuseEmail:  hostmaster@bbh.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/HOSTM1081-ARIN

OrgTechHandle: HOSTM1081-ARIN
OrgTechName:   hostmaster
OrgTechPhone:  +1-201-418-5600 
OrgTechEmail:  hostmaster@bbh.com
OrgTechRef:    https://rdap.arin.net/registry/entity/HOSTM1081-ARIN

RTechHandle: HOSTM1081-ARIN
RTechName:   hostmaster
RTechPhone:  +1-201-418-5600 
RTechEmail:  hostmaster@bbh.com
RTechRef:    https://rdap.arin.net/registry/entity/HOSTM1081-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

Peers

AS Number Description Country
AS9141 P4 Sp. z o.o. PL
AS46887 Crown Castle Fiber LLC US
AS8220 COLT Technology Services Group Limited GB
AS3549 Level 3 Communications, Inc. (GBLX) US
AS55002 F5, Inc. US
AS1239 Cogent Communications, LLC US
AS3356 Level 3 Parent, LLC US
AS6461 Zayo Bandwidth US
AS9141 P4 Play UPC PL network PL
AS174 Cogent Communications, LLC US

Upstreams

AS Number Description Country
AS46887 Crown Castle Fiber LLC US
AS8220 COLT Technology Services Group Limited GB
AS55002 F5, Inc. US
AS3356 Level 3 Parent, LLC US
AS6461 Zayo Bandwidth US
AS9141 P4 Play UPC PL network PL
AS174 Cogent Communications, LLC US
AS54004 Cablevision Lightpath LLC US
AS2516 KDDI CORPORATION JP

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Frequently Asked Questions

ASN AS18438 is an Autonomous System Number used to identify a network for BGP internet routing.
AS18438 is listed under Brown Brothers Harriman & Company.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.