ASN AS18544 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18544?

AS18544 is listed under Nektar Therapeutics.

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?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS18544 Nektar Therapeutics | IPGeolocation.io

ASN Lookup Tool

Nektar Therapeutics nektar.com

US 1 Routes

AS Data

AS18544

AS18544 – Nektar Therapeutics

AS Number	18544
AS Name	NKTR-AS01
Organization	Nektar Therapeutics(nekta-1)
Country	US
Website	nektar.com
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2010-07-15

ASN Intelligence API for production workflows

Use ASN data for AS18544 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
12.176.90.0/24	AS18544	Nektar Therapeutics	NEKTAR THERAPEUTICS	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:       18544
ASName:         NKTR-AS01
ASHandle:       AS18544
RegDate:        2010-07-15
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/18544


OrgName:        Nektar Therapeutics
OrgId:          NEKTA-1
Address:        455 Mission Bay Blvd South
City:           San Francisco
StateProv:      CA
PostalCode:     94158
Country:        US
RegDate:        2010-06-23
Updated:        2011-06-21
Ref:            https://rdap.arin.net/registry/entity/NEKTA-1


OrgTechHandle: BRYSO1-ARIN
OrgTechName:   Bryson, Paul 
OrgTechPhone:  +1-415-482-5649 
OrgTechEmail:  pbryson@nektar.com
OrgTechRef:    https://rdap.arin.net/registry/entity/BRYSO1-ARIN

OrgAbuseHandle: BRYSO1-ARIN
OrgAbuseName:   Bryson, Paul 
OrgAbusePhone:  +1-415-482-5649 
OrgAbuseEmail:  pbryson@nektar.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/BRYSO1-ARIN

OrgNOCHandle: BRYSO1-ARIN
OrgNOCName:   Bryson, Paul 
OrgNOCPhone:  +1-415-482-5649 
OrgNOCEmail:  pbryson@nektar.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/BRYSO1-ARIN

RAbuseHandle: BRYSO1-ARIN
RAbuseName:   Bryson, Paul 
RAbusePhone:  +1-415-482-5649 
RAbuseEmail:  pbryson@nektar.com
RAbuseRef:    https://rdap.arin.net/registry/entity/BRYSO1-ARIN

RNOCHandle: BRYSO1-ARIN
RNOCName:   Bryson, Paul 
RNOCPhone:  +1-415-482-5649 
RNOCEmail:  pbryson@nektar.com
RNOCRef:    https://rdap.arin.net/registry/entity/BRYSO1-ARIN

RTechHandle: BRYSO1-ARIN
RTechName:   Bryson, Paul 
RTechPhone:  +1-415-482-5649 
RTechEmail:  pbryson@nektar.com
RTechRef:    https://rdap.arin.net/registry/entity/BRYSO1-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
AS7018	AT&T Enterprises, LLC	US

Upstreams

AS Number	Description	Country
AS7018	AT&T Enterprises, LLC	US