Country
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ASN LANDING PAGE
AS19551
INCAPSULA - Incapsula Inc
Last updated · Apr 4, 2026
Total prefixes
1573
IPv4 prefixes
867
IPv6 prefixes
706
ASN summary
How to read the scale of AS19551
INCAPSULA - Incapsula Inc currently shows 1573 prefixes and 80 upstream, downstream, or peer relationships. Larger prefix inventories often indicate broader network footprint, but they should still be read together with country and peering context.
When is an ASN page most useful?
ASN landing pages are more useful than a single IP page when you want cloud provider attribution, routing research, infrastructure comparison, or network topology analysis at the organization level.
How should you read the country, organization, and role of AS19551?
INCAPSULA - Incapsula Inc is currently associated with an unknown region. Country data is only a starting point; the more important signals are the organization name, website, prefix volume, and peering relationships that reveal whether the network behaves like a cloud platform, ISP, CDN, or enterprise backbone.
What should you inspect next after the AS19551 page?
This page is currently showing live ASN data that can be used for peer, prefix, and network scale analysis. The most useful next step is usually to return to a related IP landing page, then compare that concrete address with this ASN profile and with broader topic pages for routing, cloud attribution, or WHOIS ownership analysis.
Search intents this ASN page helps cover
AS19551 ASN lookupAS19551 BGPAS19551 peersAS19551 prefixesAS19551 upstreamsINCAPSULA - Incapsula Inc ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS3762
AS3762
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AS9735
AS9735
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AS9435
AS9435
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AS11857
AS11857
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AS22612
AS22612
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AS55547
AS55547
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AS57666
AS57666
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AS48463
AS48463
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AS28517
AS28517
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AS39584
AS39584
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AS51439
AS51439
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AS147060
AS147060
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AS212012
AS212012
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AS394565
AS394565
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AS29733
AS29733
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AS131162
AS131162
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AS134729
AS134729
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AS59116
AS59116
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AS132046
AS132046
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AS38166
AS38166
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AS213815
AS213815
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AS57144
AS57144
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AS62571
AS62571
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AS51318
AS51318
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AS20187
AS20187
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AS137831
AS137831
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AS399405
AS399405
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AS63459
AS63459
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AS12678
AS12678
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AS54811
AS54811
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AS55925
AS55925
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AS27999
AS27999
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AS10204
AS10204
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AS393784
AS393784
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AS206627
AS206627
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AS10975
AS10975
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AS12211
AS12211
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AS10322
AS10322
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AS7926
AS7926
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AS27989
AS27989
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Peers
AS1299
AS1299
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AS2914
AS2914
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AS4637
AS4637
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AS174
AS174
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AS3257
AS3257
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AS6939
AS6939
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AS3491
AS3491
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AS12956
AS12956
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AS3320
AS3320
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AS200612
AS200612
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AS1680
AS1680
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AS5511
AS5511
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AS9930
AS9930
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AS30844
AS30844
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AS4826
AS4826
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AS37662
AS37662
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AS9498
AS9498
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AS6762
AS6762
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AS9002
AS9002
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AS45903
AS45903
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AS4800
AS4800
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AS135069
AS135069
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AS14960
AS14960
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AS55410
AS55410
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AS8551
AS8551
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AS4648
AS4648
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AS8220
AS8220
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AS4775
AS4775
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AS23352
AS23352
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AS32098
AS32098
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AS7713
AS7713
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AS6830
AS6830
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AS9299
AS9299
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AS3356
AS3356
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AS7473
AS7473
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AS6057
AS6057
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AS18403
AS18403
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AS9286
AS9286
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AS4788
AS4788
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AS137409
AS137409
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 103.225.240.0/24 | AS19551 | — |
| 103.225.241.0/24 | AS19551 | — |
| 103.28.248.0/24 | AS19551 | — |
| 103.28.249.0/24 | AS19551 | — |
| 103.28.250.0/24 | AS19551 | — |
| 103.28.251.0/24 | AS19551 | — |
| 103.77.142.0/24 | AS19551 | — |
| 107.154.1.0/24 | AS19551 | — |
| 107.154.10.0/24 | AS19551 | — |
| 107.154.100.0/24 | AS19551 | — |
| 107.154.101.0/24 | AS19551 | — |
| 107.154.102.0/24 | AS19551 | — |
| 107.154.103.0/24 | AS19551 | — |
| 107.154.104.0/24 | AS19551 | — |
| 107.154.105.0/24 | AS19551 | — |
| 107.154.106.0/24 | AS19551 | — |
| 107.154.107.0/24 | AS19551 | — |
| 107.154.108.0/24 | AS19551 | — |
| 107.154.109.0/24 | AS19551 | — |
| 107.154.11.0/24 | AS19551 | — |
| 107.154.110.0/24 | AS19551 | — |
| 107.154.111.0/24 | AS19551 | — |
| 107.154.112.0/24 | AS19551 | — |
| 107.154.113.0/24 | AS19551 | — |
| 107.154.114.0/24 | AS19551 | — |
| 107.154.115.0/24 | AS19551 | — |
| 107.154.116.0/24 | AS19551 | — |
| 107.154.117.0/24 | AS19551 | — |
| 107.154.118.0/24 | AS19551 | — |
| 107.154.119.0/24 | AS19551 | — |
| 107.154.12.0/24 | AS19551 | — |
| 107.154.120.0/24 | AS19551 | — |
| 107.154.121.0/24 | AS19551 | — |
| 107.154.122.0/24 | AS19551 | — |
| 107.154.123.0/24 | AS19551 | — |
| 107.154.124.0/24 | AS19551 | — |
| 107.154.125.0/24 | AS19551 | — |
| 107.154.126.0/24 | AS19551 | — |
| 107.154.127.0/24 | AS19551 | — |
| 107.154.129.0/24 | AS19551 | — |
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Related lookups and next steps
WHOIS vs ASN Ownership Guide
Continue from this ASN into the differences between WHOIS ownership and ASN ownership.
Routing Troubleshooting and Network Analysis
Continue from this ASN into route troubleshooting and network analysis.
Cloud Network and ASN Comparison
Useful when you want to compare this ASN against larger cloud and edge networks.
WHOIS and IP Ownership Guide
Continue from the ASN page into WHOIS and ownership verification.
Frequently asked questions about this ASN page
What does AS19551 represent?
AS19551 is an autonomous system number used to identify an independently operated network. The current page associates it with INCAPSULA - Incapsula Inc in an unknown region, which helps determine whether it behaves like a cloud provider, ISP, CDN, or enterprise backbone.
What are peers, upstreams, and prefixes useful for on the AS19551 page?
They help explain the scale, interconnection depth, and route structure of AS19551. Richer peering and upstream data often indicate broader network reach, but they should still be interpreted together with prefixes and related IP landing pages.
What should you do after reviewing AS19551?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS19551, then continue into cloud, WHOIS, or routing topic pages to understand the network in a broader context.
Related topics
WHOIS vs ASN Ownership Guide
Understand why WHOIS ownership and ASN ownership can differ, and how to combine both when deciding who really owns or operates an IP.
WHOIS and IP Ownership Guide
Use WHOIS, ASN, prefixes, and organization data to determine who ultimately owns an IP, range, or resolved domain target.
BGP and ASN Basics Guide
Learn what ASN, BGP routes, prefixes, upstreams, downstreams, and peers mean, then explore real ASN pages.
Cloud Network and ASN Comparison
Compare large cloud and edge networks such as Google, Cloudflare, Microsoft, and Amazon through their ASN landing pages.