ResearchRouting table, RPKI, IRR & looking glass

AS19994 Rackspace Hosting

AS19994 (RACKSPACE) is registered to Rackspace Hosting in US, through ARIN. It originates 67 prefixes in the global routing table.

66
IPv4 prefixes
1
IPv6 prefixes
537,344
IPv4 addresses
0%
RPKI valid
Registration

Who holds AS19994

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS19994
Handle
RACKSPACE
Organization
Rackspace Hosting
Country
US
Registry
ARIN
ASPA
None published
WHOIS recordARIN
#
# 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:       19994
ASName:         RACKSPACE
ASHandle:       AS19994
RegDate:        2010-01-15
Updated:        2012-02-24
Ref:            https://rdap.arin.net/registry/autnum/19994


OrgName:        Rackspace Hosting
OrgId:          RACKS-8
Address:        1718 Dry Creek Way
Address:        Ste 115
City:           San Antonio
StateProv:      TX
PostalCode:     78259-1837
Country:        US
RegDate:        2010-03-29
Updated:        2026-06-10
Ref:            https://rdap.arin.net/registry/entity/RACKS-8


OrgTechHandle: ZR9-ARIN
OrgTechName:   Rackspace, com 
OrgTechPhone:  +1-210-312-4000 
OrgTechEmail:  hostmaster@rackspace.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ZR9-ARIN

OrgNOCHandle: HANSE157-ARIN
OrgNOCName:   Hansell, Chris 
OrgNOCPhone:  +1-210-312-4000 
OrgNOCEmail:  hostmaster@rackspace.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/HANSE157-ARIN

OrgTechHandle: IPADM17-ARIN
OrgTechName:   IPADMIN
OrgTechPhone:  +1-210-312-4000 
OrgTechEmail:  hostmaster@rackspace.com
OrgTechRef:    https://rdap.arin.net/registry/entity/IPADM17-ARIN

OrgAbuseHandle: ABUSE45-ARIN
OrgAbuseName:   Abuse Desk
OrgAbusePhone:  +1-210-312-4000 
OrgAbuseEmail:  abuse@rackspace.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE45-ARIN

OrgTechHandle: HANSE157-ARIN
OrgTechName:   Hansell, Chris 
OrgTechPhone:  +1-210-312-4000 
OrgTechEmail:  hostmaster@rackspace.com
OrgTechRef:    https://rdap.arin.net/registry/entity/HANSE157-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.
#
Routing

What AS19994 announces

Prefixes originated by AS19994 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
66
IPv6 prefixes
1
IPv4 addresses
537,344 (2,099 /24s)
RPKI valid
0 0%
RPKI invalid
0
RPKI not found
67
ROAs naming AS19994
1
With an IRR route object
63 94%
Prefixes

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

IPv4 (66)
23.253.0.0/1823.253.160.0/1923.253.192.0/1950.56.0.0/1750.57.0.0/1750.57.128.0/1850.57.192.0/1950.57.224.0/2064.49.232.0/2365.61.188.0/2466.216.116.0/2367.207.128.0/1969.170.128.0/2074.120.216.0/2274.200.192.0/18104.130.64.0/20104.130.80.0/20104.130.96.0/20104.130.112.0/21104.130.192.0/19104.239.192.0/19108.166.0.0/18108.166.96.0/19108.171.160.0/20134.8.2.0/24146.88.100.0/22146.88.112.0/22146.88.120.0/22147.75.8.0/22147.75.12.0/22161.47.0.0/18161.47.64.0/18161.47.128.0/17162.209.0.0/18162.209.80.0/20162.216.40.0/22162.242.160.0/19166.78.64.0/18166.78.192.0/18173.45.224.0/20173.45.240.0/21173.203.0.0/17184.106.0.0/19184.106.32.0/20184.106.48.0/22184.106.52.0/23184.106.54.0/24184.106.56.0/21184.106.64.0/18184.106.128.0/17192.237.128.0/18192.237.224.0/19198.61.128.0/18198.61.224.0/19198.101.128.0/18198.254.72.0/21199.180.184.0/22199.253.200.0/24199.253.201.0/24204.9.188.0/24204.13.108.0/22204.51.170.0/24208.78.96.0/21209.20.64.0/19209.61.166.0/23216.18.148.0/22
IPv6 (1)
2001:4801::/32

RPKI valid   RPKI invalid   no ROA covers it

Neighbors

Who AS19994 is reached through

The AS just before AS19994 in the paths our looking glass collectors hold, for 60 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

AS12200 RACKSPACE 60
IRR

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.

Sourceas-nameMaintained by
RADBRACKSPACE-ORDMAINT-AS10532

Route objects with origin AS19994: RADB 112

as-sets that list AS19994 (4)
AS-19994AS-CMAS-RACKSPACEAS-XO-B
Tools

Check AS19994 live

ASN lookup and WHOISRPKI validatorASPA validatorIRR lookup