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AS19551 INCAPSULA - Incapsula Inc

Everything the routing table and the registries say about AS19551: who holds it, which registry issued it, and which address blocks it advertises.

Content deliveryAS19551

906 IPv4 and 727 IPv6 prefixes announced.

Registry facts

Refreshed daily
AS number
AS19551
Holder
INCAPSULA - Incapsula Inc
Country
US
Regional registry
ARIN — American Registry for Internet Numbers
Registry block
18432-20479 (IANA 16-bit Autonomous System (AS) Numbers Registry)
Announced today
Yes
IPv4 prefixes
906
IPv6 prefixes
727
Observed at
2026-09-05T16:00:00

Data: RIPEstat. Prefix and holder data comes from the RIPEstat Data API and is cached for 24 hours. The regional registry is derived from the IANA AS number allocation table. Authoritative registry records are served by ARIN RDAP.

Announced prefixes

906 IPv4 · 727 IPv6
  • 100 IPv4 shown
  • 100 IPv6 shown
  • 42.200.61.0/24
  • 45.60.0.0/24
  • 45.60.1.0/24
  • 45.60.3.0/24
  • 45.60.4.0/24
  • 45.60.5.0/24
  • 45.60.6.0/24
  • 45.60.7.0/24
  • 45.60.8.0/24
  • 45.60.9.0/24
  • 45.60.10.0/24
  • 45.60.11.0/24
  • 45.60.12.0/24
  • 45.60.13.0/24
  • 45.60.14.0/24
  • 45.60.15.0/24
  • 45.60.16.0/24
  • 45.60.17.0/24
  • 45.60.18.0/24
  • 45.60.19.0/24
  • 45.60.20.0/24
  • 45.60.21.0/24
  • 45.60.22.0/24
  • 45.60.23.0/24
  • 45.60.24.0/24
  • 45.60.25.0/24
  • 45.60.26.0/24
  • 45.60.27.0/24
  • 45.60.28.0/24
  • 45.60.29.0/24
  • 45.60.30.0/24
  • 45.60.31.0/24
  • 45.60.32.0/24
  • 45.60.33.0/24
  • 45.60.34.0/24
  • 45.60.35.0/24
  • 45.60.36.0/24
  • 45.60.37.0/24
  • 45.60.38.0/24
  • 45.60.39.0/24
  • 45.60.40.0/24
  • 45.60.42.0/24
  • 45.60.44.0/24
  • 45.60.45.0/24
  • 45.60.46.0/24
  • 45.60.47.0/24
  • 45.60.48.0/24
  • 45.60.49.0/24
  • 45.60.50.0/24
  • 45.60.51.0/24
  • 45.60.52.0/24
  • 45.60.53.0/24
  • 45.60.54.0/24
  • 45.60.55.0/24
  • 45.60.56.0/24
  • 45.60.57.0/24
  • 45.60.58.0/24
  • 45.60.60.0/24
  • 45.60.61.0/24
  • 45.60.62.0/24
  • 45.60.63.0/24
  • 45.60.64.0/24
  • 45.60.65.0/24
  • 45.60.66.0/24
  • 45.60.67.0/24
  • 45.60.68.0/24
  • 45.60.69.0/24
  • 45.60.70.0/24
  • 45.60.71.0/24
  • 45.60.72.0/24
  • 45.60.73.0/24
  • 45.60.74.0/24
  • 45.60.75.0/24
  • 45.60.76.0/24
  • 45.60.77.0/24
  • 45.60.78.0/24
  • 45.60.79.0/24
  • 45.60.80.0/24
  • 45.60.81.0/24
  • 45.60.82.0/24
  • 45.60.83.0/24
  • 45.60.84.0/24
  • 45.60.85.0/24
  • 45.60.86.0/24
  • 45.60.87.0/24
  • 45.60.88.0/24
  • 45.60.89.0/24
  • 45.60.90.0/24
  • 45.60.91.0/24
  • 45.60.92.0/24
  • 45.60.93.0/24
  • 45.60.94.0/24
  • 45.60.95.0/24
  • 45.60.96.0/24
  • 45.60.97.0/24
  • 45.60.98.0/24
  • 45.60.99.0/24
  • 45.60.100.0/24
  • 45.60.101.0/24
  • 45.60.102.0/24
  • 2a02:e980::/48
  • 2a02:e980:1::/48
  • 2a02:e980:10::/48
  • 2a02:e980:100::/48
  • 2a02:e980:101::/48
  • 2a02:e980:102::/48
  • 2a02:e980:103::/48
  • 2a02:e980:104::/48
  • 2a02:e980:105::/48
  • 2a02:e980:106::/48
  • 2a02:e980:107::/48
  • 2a02:e980:108::/48
  • 2a02:e980:109::/48
  • 2a02:e980:10a::/48
  • 2a02:e980:10b::/48
  • 2a02:e980:10c::/48
  • 2a02:e980:10d::/48
  • 2a02:e980:10e::/48
  • 2a02:e980:10f::/48
  • 2a02:e980:11::/48
  • 2a02:e980:110::/48
  • 2a02:e980:111::/48
  • 2a02:e980:112::/48
  • 2a02:e980:113::/48
  • 2a02:e980:114::/48
  • 2a02:e980:115::/48
  • 2a02:e980:116::/48
  • 2a02:e980:117::/48
  • 2a02:e980:118::/48
  • 2a02:e980:119::/48
  • 2a02:e980:11a::/48
  • 2a02:e980:11b::/48
  • 2a02:e980:11c::/48
  • 2a02:e980:11d::/48
  • 2a02:e980:11e::/48
  • 2a02:e980:11f::/48
  • 2a02:e980:12::/48
  • 2a02:e980:120::/48
  • 2a02:e980:121::/48
  • 2a02:e980:122::/48
  • 2a02:e980:123::/48
  • 2a02:e980:124::/48
  • 2a02:e980:127::/48
  • 2a02:e980:128::/48
  • 2a02:e980:129::/48
  • 2a02:e980:12a::/48
  • 2a02:e980:12b::/48
  • 2a02:e980:12c::/48
  • 2a02:e980:12d::/48
  • 2a02:e980:12e::/48
  • 2a02:e980:12f::/48
  • 2a02:e980:13::/48
  • 2a02:e980:130::/48
  • 2a02:e980:131::/48
  • 2a02:e980:132::/48
  • 2a02:e980:133::/48
  • 2a02:e980:134::/48
  • 2a02:e980:135::/48
  • 2a02:e980:136::/48
  • 2a02:e980:137::/48
  • 2a02:e980:138::/48
  • 2a02:e980:139::/48
  • 2a02:e980:13c::/48
  • 2a02:e980:13d::/48
  • 2a02:e980:13e::/48
  • 2a02:e980:13f::/48
  • 2a02:e980:14::/48
  • 2a02:e980:140::/48
  • 2a02:e980:141::/48
  • 2a02:e980:142::/48
  • 2a02:e980:143::/48
  • 2a02:e980:146::/48
  • 2a02:e980:147::/48
  • 2a02:e980:148::/48
  • 2a02:e980:149::/48
  • 2a02:e980:14a::/48
  • 2a02:e980:14b::/48
  • 2a02:e980:14c::/48
  • 2a02:e980:14d::/48
  • 2a02:e980:14e::/48
  • 2a02:e980:14f::/48
  • 2a02:e980:15::/48
  • 2a02:e980:150::/48
  • 2a02:e980:153::/48
  • 2a02:e980:154::/48
  • 2a02:e980:155::/48
  • 2a02:e980:156::/48
  • 2a02:e980:157::/48
  • 2a02:e980:158::/48
  • 2a02:e980:159::/48
  • 2a02:e980:15a::/48
  • 2a02:e980:15b::/48
  • 2a02:e980:15c::/48
  • 2a02:e980:15d::/48
  • 2a02:e980:15e::/48
  • 2a02:e980:15f::/48
  • 2a02:e980:16::/48
  • 2a02:e980:160::/48
  • 2a02:e980:161::/48
  • 2a02:e980:162::/48

A prefix here is a block this AS was seen originating in BGP, not a block it is guaranteed to own. Announcement and allocation are different facts, and they disagree more often than people expect.

Registry record

arin
FieldValue
ASNumber19551
ASNameINCAPSULA
ASHandle19551
RegDate2011-01-12
Refhttps://rdap.arin.net/registry/autnum/19551
sourceARIN
OrgAbuseHandleABUSE9265-ARIN
OrgAbuseNameAbuse
OrgAbusePhone+1-650-345-9000
OrgAbuseEmailww.dis.abuse@thalesgroup.com
OrgAbuseRefhttps://rdap.arin.net/registry/entity/ABUSE9265-ARIN
sourceARIN
OrgNOCHandleNOC33850-ARIN
OrgNOCNameNOC
OrgNOCPhone+1-650-345-9000
OrgNOCEmailww.dis.incapsula.noc@thalesgroup.com
OrgNOCRefhttps://rdap.arin.net/registry/entity/NOC33850-ARIN
sourceARIN
OrgNameIncapsula Inc
OrgIdINCAP-5
AddressOne Curiosity Way, Suite 203
CitySAN MATEO
StateProvCA
PostalCode94403

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