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AS53900 OrbiMed Advisors, LLC

Q: Why is WHOIS data shown for an ASN?

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

ASN Lookup Tool

OrbiMed Advisors, LLC orbimed.com

US 1 Routes

AS Data

AS53900

AS53900 – OrbiMed Advisors, LLC

AS Number	53900
AS Name	ORBIMED
Organization	OrbiMed Advisors, LLC (oal-7)
Country	US
Website	orbimed.com
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2011-08-03

ASN Intelligence API for production workflows

Use ASN data for AS53900 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
38.121.137.0/24	AS53900	OrbiMed Advisors, LLC	OrbiMed Advisors, LLC	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:       53900
ASName:         ORBIMED
ASHandle:       AS53900
RegDate:        2011-08-03
Updated:        2022-02-09
Ref:            https://rdap.arin.net/registry/autnum/53900


OrgName:        OrbiMed Advisors, LLC
OrgId:          OAL-7
Address:        601 Lexington Avenue
Address:        54th Floor
City:           New York
StateProv:      NY
PostalCode:     10022
Country:        US
RegDate:        2011-07-21
Updated:        2014-09-04
Ref:            https://rdap.arin.net/registry/entity/OAL-7


OrgTechHandle: RHEED-ARIN
OrgTechName:   Rhee, Daniel 
OrgTechPhone:  +1-212-739-6400 
OrgTechEmail:  NetworkMonitoring@OrbiMed.com
OrgTechRef:    https://rdap.arin.net/registry/entity/RHEED-ARIN

OrgAbuseHandle: RHEED-ARIN
OrgAbuseName:   Rhee, Daniel 
OrgAbusePhone:  +1-212-739-6400 
OrgAbuseEmail:  NetworkMonitoring@OrbiMed.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/RHEED-ARIN

OrgNOCHandle: RHEED-ARIN
OrgNOCName:   Rhee, Daniel 
OrgNOCPhone:  +1-212-739-6400 
OrgNOCEmail:  NetworkMonitoring@OrbiMed.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/RHEED-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

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "53900",
    "as_handle" : "AS53900",
    "as_name" : "ORBIMED",
    "tech_contacts" : [ "RHEED-ARIN" ],
    "abuse_contacts" : [ "RHEED-ARIN" ],
    "date_created" : "2011-08-03",
    "date_updated" : "2022-02-09",
    "source" : "https://rdap.arin.net/registry/autnum/53900"
  } ],
  "organization" : {
    "handle" : "OAL-7",
    "name" : "OrbiMed Advisors, LLC",
    "address" : [ "601 Lexington Avenue", "54th Floor", "New York", "NY", "10022", "US" ],
    "street" : "Lexington Avenue",
    "city" : "New York",
    "state" : "NY",
    "zip_code" : "10022",
    "country" : [ "US" ],
    "date_created" : "2011-07-21",
    "date_updated" : "2014-09-04",
    "source" : "https://rdap.arin.net/registry/entity/OAL-7",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "RHEED-ARIN",
    "name" : "Rhee, Daniel",
    "email" : [ "NetworkMonitoring@OrbiMed.com" ],
    "phone" : [ "+1-212-739-6400" ],
    "source" : "https://rdap.arin.net/registry/entity/RHEED-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "RHEED-ARIN",
    "name" : "Rhee, Daniel",
    "email" : [ "NetworkMonitoring@OrbiMed.com" ],
    "phone" : [ "+1-212-739-6400" ],
    "source" : "https://rdap.arin.net/registry/entity/RHEED-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US
AS1239	Cogent Communications, LLC	US
AS174	Cogent Communications, LLC	US

Upstreams

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US
AS174	Cogent Communications, LLC	US

Frequently Asked Questions

What is ASN AS53900?

ASN AS53900 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS53900?

AS53900 is listed under OrbiMed Advisors, LLC.

What do peers, upstreams, and downstreams mean?

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 included here?

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

How can I access full ASN table data?

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.