ASN AS23400 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS23400?

AS23400 is listed under Software Design Corporation.

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.

AS23400 Software Design Corporation

ASN Lookup Tool

Software Design Corporation softdsgn.com

US 16 Routes

AS Data

AS23400

AS23400 – Software Design Corporation

AS Number	23400
AS Name	SDC
Organization	Software Design Corporation(sdc-227)
Country	US
Website	softdsgn.com
Number of IPv4 Routes	16
Number of IPv6 Routes	0
ASN type	ISP
Registry	ARIN
Date Allocated	2002-03-12

ASN Intelligence API for production workflows

Use ASN data for AS23400 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
63.247.101.0/24	AS23400	Internet Access Point Corporation	Internet Access Point Corporation	256
63.247.96.0/24	AS23400	Internet Access Point Corporation	Internet Access Point Corporation	256
63.247.98.0/24	AS23400	Internet Access Point Corporation	Internet Access Point Corporation	256
63.247.106.0/24	AS23400	Internet Access Point Corporation	Internet Access Point Corporation	256
63.247.108.0/24	AS23400	Internet Access Point Corporation	Internet Access Point Corporation	256
63.247.104.0/24	AS23400	Internet Access Point Corporation	Internet Access Point Corporation	256
63.247.99.0/24	AS23400	Internet Access Point Corporation	Internet Access Point Corporation	256
63.247.111.0/24	AS23400	Internet Access Point Corporation	Internet Access Point Corporation	256
63.247.100.0/24	AS23400	Internet Access Point Corporation	Internet Access Point Corporation	256
63.247.107.0/24	AS23400	Internet Access Point Corporation	Internet Access Point Corporation	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:       23400
ASName:         SDC
ASHandle:       AS23400
RegDate:        2002-03-12
Updated:        2026-03-16    
Ref:            https://rdap.arin.net/registry/autnum/23400


OrgName:        Software Design Corporation
OrgId:          SDC-227
Address:        P.O. BOX 2438
City:           SUGAR LAND
StateProv:      TX
PostalCode:     77487-2438
Country:        US
RegDate:        2026-02-25
Updated:        2026-03-04
Ref:            https://rdap.arin.net/registry/entity/SDC-227

ReferralServer:  rwhois://rwhois.softdsgn.com:4321

OrgAbuseHandle: SDCHO-ARIN
OrgAbuseName:   SDC Hostmaster
OrgAbusePhone:  +1-281-494-7227 
OrgAbuseEmail:  hostmaster@softdsgn.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/SDCHO-ARIN

OrgTechHandle: SDCHO-ARIN
OrgTechName:   SDC Hostmaster
OrgTechPhone:  +1-281-494-7227 
OrgTechEmail:  hostmaster@softdsgn.com
OrgTechRef:    https://rdap.arin.net/registry/entity/SDCHO-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
AS3549	Level 3 Communications, Inc. (GBLX)	US
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS3356	Level 3 Parent, LLC	US