ASN AS19878 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS19878?

AS19878 is listed under MedImpact Healthcare Systems, 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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AS19878 MedImpact Healthcare Systems, Inc.

ASN Lookup Tool

MedImpact Healthcare Systems, Inc. medimpact.com

US 8 Routes

AS Data

AS19878

AS19878 – MedImpact Healthcare Systems, Inc.

AS Number	19878
AS Name	MEDIMPACT
Organization	MedImpact Healthcare Systems, Inc.(medimp)
Country	US
Website	medimpact.com
Number of IPv4 Routes	8
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2001-02-26

ASN Intelligence API for production workflows

Use ASN data for AS19878 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
198.54.236.0/23	AS19878	MedImpact Healthcare Systems, Inc.	MedImpact Healthcare Systems, Inc.	512
208.91.230.0/23	AS19878	MedImpact Healthcare Systems, Inc.	MedImpact Healthcare Systems, Inc.	512
198.54.238.0/24	AS19878	MedImpact Healthcare Systems, Inc.	MedImpact Healthcare Systems, Inc.	256
208.91.229.0/24	AS19878	MedImpact Healthcare Systems, Inc.	MedImpact Healthcare Systems, Inc.	256
208.91.224.0/24	AS19878	MedImpact Healthcare Systems, Inc.	MedImpact Healthcare Systems, Inc.	256
198.54.239.0/24	AS19878	MedImpact Healthcare Systems, Inc.	MedImpact Healthcare Systems, Inc.	256
208.91.225.0/24	AS19878	MedImpact Healthcare Systems, Inc.	MedImpact Healthcare Systems, Inc.	256
208.91.228.0/24	AS19878	MedImpact Healthcare Systems, Inc.	MedImpact Healthcare Systems, Inc.	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:       19878
ASName:         MEDIMPACT
ASHandle:       AS19878
RegDate:        2001-02-26
Updated:        2025-09-02
Comment:        INS6-ARIN    
Ref:            https://rdap.arin.net/registry/autnum/19878


OrgName:        MedImpact Healthcare Systems, Inc.
OrgId:          MEDIMP
Address:        10181 Scripps Gateway Court
City:           San Diego
StateProv:      CA
PostalCode:     92131
Country:        US
RegDate:        1994-04-11
Updated:        2025-09-16
Ref:            https://rdap.arin.net/registry/entity/MEDIMP


OrgAbuseHandle: INS6-ARIN
OrgAbuseName:   IT Networks Systems
OrgAbusePhone:  +1-858-790-6176 
OrgAbuseEmail:  netsol@medimpact.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/INS6-ARIN

OrgTechHandle: INE33-ARIN
OrgTechName:   IT Network Engineering
OrgTechPhone:  +1-858-333-2954 
OrgTechEmail:  itnetworkengineering@medimpact.com
OrgTechRef:    https://rdap.arin.net/registry/entity/INE33-ARIN

OrgTechHandle: INS6-ARIN
OrgTechName:   IT Networks Systems
OrgTechPhone:  +1-858-790-6176 
OrgTechEmail:  netsol@medimpact.com
OrgTechRef:    https://rdap.arin.net/registry/entity/INS6-ARIN

OrgNOCHandle: INS6-ARIN
OrgNOCName:   IT Networks Systems
OrgNOCPhone:  +1-858-790-6176 
OrgNOCEmail:  netsol@medimpact.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/INS6-ARIN

RTechHandle: INS6-ARIN
RTechName:   IT Networks Systems
RTechPhone:  +1-858-790-6176 
RTechEmail:  netsol@medimpact.com
RTechRef:    https://rdap.arin.net/registry/entity/INS6-ARIN

RNOCHandle: INS6-ARIN
RNOCName:   IT Networks Systems
RNOCPhone:  +1-858-790-6176 
RNOCEmail:  netsol@medimpact.com
RNOCRef:    https://rdap.arin.net/registry/entity/INS6-ARIN

RAbuseHandle: INS6-ARIN
RAbuseName:   IT Networks Systems
RAbusePhone:  +1-858-790-6176 
RAbuseEmail:  netsol@medimpact.com
RAbuseRef:    https://rdap.arin.net/registry/entity/INS6-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
AS22489	Castle Access Inc	US
AS3356	Level 3 Parent, LLC	US
AS6461	Zayo Bandwidth	US
AS22773	Cox Communications Inc.	US

Upstreams

AS Number	Description	Country
AS22489	Castle Access Inc	US
AS3356	Level 3 Parent, LLC	US
AS6461	Zayo Bandwidth	US
AS22773	Cox Communications Inc.	US