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AS19993 R.J. O'Brien and Associates, Inc.

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

R.J. O'Brien and Associates, Inc. dredel.com

US 5 Routes

AS Data

AS19993

AS19993 – R.J. O'Brien and Associates, Inc.

AS Number	19993
AS Name	RJOBRIEN
Organization	R.J. O'Brien and Associates, Inc.(roa-8)
Country	US
Website	dredel.com
Number of IPv4 Routes	5
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2001-03-13

ASN Intelligence API for production workflows

Use ASN data for AS19993 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
199.26.94.0/24	AS19993	R.J. OBrien and Associates, Inc.	RJO Technology, LLC	256
199.26.92.0/24	AS19993	R.J. OBrien and Associates, Inc.	RJO Technology, LLC	256
199.26.90.0/24	AS19993	R.J. OBrien and Associates, Inc.	RJO Technology, LLC	256
199.26.89.0/24	AS19993	R.J. OBrien and Associates, Inc.	RJO Technology, LLC	256
199.26.88.0/24	AS19993	R.J. OBrien and Associates, Inc.	RJO Technology, 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:       19993
ASName:         RJOBRIEN
ASHandle:       AS19993
RegDate:        2001-03-13
Updated:        2012-02-24    
Ref:            https://rdap.arin.net/registry/autnum/19993


OrgName:        R.J. O'Brien and Associates, Inc.
OrgId:          ROA-8
Address:        222 Riverside Drive, Ninth Floor
City:           Chicago
StateProv:      IL
PostalCode:     60660
Country:        US
RegDate:        2001-03-13
Updated:        2012-10-10
Ref:            https://rdap.arin.net/registry/entity/ROA-8


OrgTechHandle: SK692-ARIN
OrgTechName:   Kent, Steven 
OrgTechPhone:  +1-847-859-3813 
OrgTechEmail:  sjk@dredel.com
OrgTechRef:    https://rdap.arin.net/registry/entity/SK692-ARIN

OrgAbuseHandle: SK692-ARIN
OrgAbuseName:   Kent, Steven 
OrgAbusePhone:  +1-847-859-3813 
OrgAbuseEmail:  sjk@dredel.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/SK692-ARIN

RTechHandle: SK692-ARIN
RTechName:   Kent, Steven 
RTechPhone:  +1-847-859-3813 
RTechEmail:  sjk@dredel.com
RTechRef:    https://rdap.arin.net/registry/entity/SK692-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
AS13335	Cloudflare, Inc.	US

Upstreams

AS Number	Description	Country
AS13335	Cloudflare, Inc.	US

Frequently Asked Questions

What is ASN AS19993?

ASN AS19993 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS19993?

AS19993 is listed under R.J. O'Brien and Associates, Inc..

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.