ASN AS18551 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18551?

AS18551 is listed under Rothschild & Co US Inc..

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

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AS18551 Rothschild & Co US Inc.

Rothschild & Co US Inc. rothschildandco.com

US 2 Routes

AS Data

AS18551

AS18551 – Rothschild & Co US Inc.

AS Number	18551
AS Name	ROTHINC
Organization	Rothschild & Co US Inc.(rothsc-3)
Country	US
Website	rothschildandco.com
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2000-09-12

ASN Intelligence API for production workflows

Use ASN data for AS18551 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
216.145.44.0/22	AS18551	Rothschild & Co US Inc.	Rothschild & Co US Inc.	1024
216.145.32.0/22	AS18551	Rothschild & Co US Inc.	Rothschild & Co US Inc.	1024

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:       18551
ASName:         ROTHINC
ASHandle:       AS18551
RegDate:        2000-09-12
Updated:        2020-05-14    
Ref:            https://rdap.arin.net/registry/autnum/18551


OrgName:        Rothschild & Co US Inc.
OrgId:          ROTHSC-3
Address:        1251 Avenue of the Americas,
City:           New York
StateProv:      NY
PostalCode:     10016
Country:        US
RegDate:        2000-08-01
Updated:        2024-11-25
Ref:            https://rdap.arin.net/registry/entity/ROTHSC-3


OrgTechHandle: LAURE51-ARIN
OrgTechName:   LAURENCEAU, GERALD 
OrgTechPhone:  +1-212-403-3684 
OrgTechEmail:  gerald.laurenceau@rothschildandco.com
OrgTechRef:    https://rdap.arin.net/registry/entity/LAURE51-ARIN

OrgRoutingHandle: LAURE51-ARIN
OrgRoutingName:   LAURENCEAU, GERALD 
OrgRoutingPhone:  +1-212-403-3684 
OrgRoutingEmail:  gerald.laurenceau@rothschildandco.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/LAURE51-ARIN

OrgAbuseHandle: PERRI143-ARIN
OrgAbuseName:   Perring, Alan 
OrgAbusePhone:  +44 20 7280 5949 
OrgAbuseEmail:  alan.perring@rothschildandco.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/PERRI143-ARIN

OrgDNSHandle: LAURE51-ARIN
OrgDNSName:   LAURENCEAU, GERALD 
OrgDNSPhone:  +1-212-403-3684 
OrgDNSEmail:  gerald.laurenceau@rothschildandco.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/LAURE51-ARIN

OrgRoutingHandle: PERRI143-ARIN
OrgRoutingName:   Perring, Alan 
OrgRoutingPhone:  +44 20 7280 5949 
OrgRoutingEmail:  alan.perring@rothschildandco.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/PERRI143-ARIN

OrgNOCHandle: LAURE51-ARIN
OrgNOCName:   LAURENCEAU, GERALD 
OrgNOCPhone:  +1-212-403-3684 
OrgNOCEmail:  gerald.laurenceau@rothschildandco.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/LAURE51-ARIN

OrgAbuseHandle: WICKH20-ARIN
OrgAbuseName:   Wickham, Graham 
OrgAbusePhone:  +44 207 280 5718 
OrgAbuseEmail:  graham.wickham@rothschildandco.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/WICKH20-ARIN

OrgAbuseHandle: LAURE51-ARIN
OrgAbuseName:   LAURENCEAU, GERALD 
OrgAbusePhone:  +1-212-403-3684 
OrgAbuseEmail:  gerald.laurenceau@rothschildandco.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/LAURE51-ARIN

OrgDNSHandle: PERRI143-ARIN
OrgDNSName:   Perring, Alan 
OrgDNSPhone:  +44 20 7280 5949 
OrgDNSEmail:  alan.perring@rothschildandco.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/PERRI143-ARIN

OrgNOCHandle: WICKH20-ARIN
OrgNOCName:   Wickham, Graham 
OrgNOCPhone:  +44 207 280 5718 
OrgNOCEmail:  graham.wickham@rothschildandco.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/WICKH20-ARIN

OrgDNSHandle: WICKH20-ARIN
OrgDNSName:   Wickham, Graham 
OrgDNSPhone:  +44 207 280 5718 
OrgDNSEmail:  graham.wickham@rothschildandco.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/WICKH20-ARIN

OrgNOCHandle: PERRI143-ARIN
OrgNOCName:   Perring, Alan 
OrgNOCPhone:  +44 20 7280 5949 
OrgNOCEmail:  alan.perring@rothschildandco.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/PERRI143-ARIN

OrgRoutingHandle: WICKH20-ARIN
OrgRoutingName:   Wickham, Graham 
OrgRoutingPhone:  +44 207 280 5718 
OrgRoutingEmail:  graham.wickham@rothschildandco.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/WICKH20-ARIN

OrgTechHandle: PERRI143-ARIN
OrgTechName:   Perring, Alan 
OrgTechPhone:  +44 20 7280 5949 
OrgTechEmail:  alan.perring@rothschildandco.com
OrgTechRef:    https://rdap.arin.net/registry/entity/PERRI143-ARIN

OrgTechHandle: WICKH20-ARIN
OrgTechName:   Wickham, Graham 
OrgTechPhone:  +44 207 280 5718 
OrgTechEmail:  graham.wickham@rothschildandco.com
OrgTechRef:    https://rdap.arin.net/registry/entity/WICKH20-ARIN

RAbuseHandle: LAURE51-ARIN
RAbuseName:   LAURENCEAU, GERALD 
RAbusePhone:  +1-212-403-3684 
RAbuseEmail:  gerald.laurenceau@rothschildandco.com
RAbuseRef:    https://rdap.arin.net/registry/entity/LAURE51-ARIN

RNOCHandle: WICKH20-ARIN
RNOCName:   Wickham, Graham 
RNOCPhone:  +44 207 280 5718 
RNOCEmail:  graham.wickham@rothschildandco.com
RNOCRef:    https://rdap.arin.net/registry/entity/WICKH20-ARIN

RTechHandle: LAURE51-ARIN
RTechName:   LAURENCEAU, GERALD 
RTechPhone:  +1-212-403-3684 
RTechEmail:  gerald.laurenceau@rothschildandco.com
RTechRef:    https://rdap.arin.net/registry/entity/LAURE51-ARIN

RTechHandle: WICKH20-ARIN
RTechName:   Wickham, Graham 
RTechPhone:  +44 207 280 5718 
RTechEmail:  graham.wickham@rothschildandco.com
RTechRef:    https://rdap.arin.net/registry/entity/WICKH20-ARIN

RNOCHandle: PERRI143-ARIN
RNOCName:   Perring, Alan 
RNOCPhone:  +44 20 7280 5949 
RNOCEmail:  alan.perring@rothschildandco.com
RNOCRef:    https://rdap.arin.net/registry/entity/PERRI143-ARIN

RNOCHandle: LAURE51-ARIN
RNOCName:   LAURENCEAU, GERALD 
RNOCPhone:  +1-212-403-3684 
RNOCEmail:  gerald.laurenceau@rothschildandco.com
RNOCRef:    https://rdap.arin.net/registry/entity/LAURE51-ARIN

RTechHandle: PERRI143-ARIN
RTechName:   Perring, Alan 
RTechPhone:  +44 20 7280 5949 
RTechEmail:  alan.perring@rothschildandco.com
RTechRef:    https://rdap.arin.net/registry/entity/PERRI143-ARIN

RAbuseHandle: PERRI143-ARIN
RAbuseName:   Perring, Alan 
RAbusePhone:  +44 20 7280 5949 
RAbuseEmail:  alan.perring@rothschildandco.com
RAbuseRef:    https://rdap.arin.net/registry/entity/PERRI143-ARIN

RAbuseHandle: WICKH20-ARIN
RAbuseName:   Wickham, Graham 
RAbusePhone:  +44 207 280 5718 
RAbuseEmail:  graham.wickham@rothschildandco.com
RAbuseRef:    https://rdap.arin.net/registry/entity/WICKH20-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
AS6461	Zayo Bandwidth	US

Upstreams

AS Number	Description	Country
AS6461	Zayo Bandwidth	US

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