AS23400 Software Design Corporation 🇺🇸 US

Announcing 15 prefixes, seen at the RIS collectors.

IPv4 prefixes

3,840 (15 × /24)

IPv6 prefixes

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

ASes reachable through it

Registry and operator data

AS number: AS23400
Name: Software Design Corporation
Organisation: Software Design Corporation
Country: 🇺🇸 US
RIR: ARIN
Allocated: 2002-03-12

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

0 valid (0.0%) 0 invalid (0.0%) 15 no ROA (100.0%)

Whois

Fetched from whois.arin.net

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

OrgTechHandle: SDCHO-ARIN
OrgTechName:   SDC Hostmaster
OrgTechPhone:  +1-281-494-7227
OrgTechEmail:  hostmaster@softdsgn.com
OrgTechRef:    https://rdap.arin.net/registry/entity/SDCHO-ARIN

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