ASN AS187 is an Autonomous System Number used to identify a network for BGP internet routing.

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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AS187 DNScast | IPGeolocation.io

ASN Lookup Tool

DNScast pch.net

US 34 Routes

AS Data

AS187

AS187 – DNScast

AS Number	187
AS Name	DNSCAST-AS
Organization	DNScast(woody-2)
Country	US
Website	pch.net
Number of IPv4 Routes	17
Number of IPv6 Routes	17
ASN type	ISP
Registry	ARIN
Date Allocated	2009-07-22

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2620:171:d0c::/48	AS187	DNScast	WoodyNet, Inc.	~1×10²⁴
2620:171:d02::/48	AS187	DNScast	WoodyNet, Inc.	~1×10²⁴
2620:171:d07::/48	AS187	DNScast	WoodyNet, Inc.	~1×10²⁴
72.42.116.0/24	AS187	DNScast	WoodyNet, Inc.	256
72.42.112.0/24	AS187	DNScast	WoodyNet, Inc.	256
2001:dd8:7::/48	AS187	DNScast	Packet Clearing House	~1×10²⁴
72.42.125.0/24	AS187	DNScast	WoodyNet, Inc.	256
72.42.115.0/24	AS187	DNScast	WoodyNet, Inc.	256
2620:171:d01::/48	AS187	DNScast	WoodyNet, Inc.	~1×10²⁴
203.119.88.0/23	AS187	DNScast	Packet Clearing House	512

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:       187
ASName:         DNSCAST-AS
ASHandle:       AS187
RegDate:        2009-07-22
Updated:        2012-03-20    
Ref:            https://rdap.arin.net/registry/autnum/187


OrgName:        DNScast
OrgId:          WOODY-2
Address:        2351 Virginia Street
City:           Berkeley
StateProv:      CA
PostalCode:     94709-1315
Country:        US
RegDate:        2009-07-21
Updated:        2011-09-24
Ref:            https://rdap.arin.net/registry/entity/WOODY-2


OrgAbuseHandle: BW1324-ARIN
OrgAbuseName:   Woodcock, Bill 
OrgAbusePhone:  +1-415-831-3103 
OrgAbuseEmail:  woody@pch.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/BW1324-ARIN

OrgTechHandle: BW1324-ARIN
OrgTechName:   Woodcock, Bill 
OrgTechPhone:  +1-415-831-3103 
OrgTechEmail:  woody@pch.net
OrgTechRef:    https://rdap.arin.net/registry/entity/BW1324-ARIN

RTechHandle: BW1324-ARIN
RTechName:   Woodcock, Bill 
RTechPhone:  +1-415-831-3103 
RTechEmail:  woody@pch.net
RTechRef:    https://rdap.arin.net/registry/entity/BW1324-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
AS42	WoodyNet, Inc.	US

Upstreams

AS Number	Description	Country
AS42	WoodyNet, Inc.	US