ResearchRouting table, looking glass, RPKI & IRR

201.237.0.0/16 Instituto Costarricense de Electricidad y Telecom.

Announced by AS11830 Instituto Costarricense de Electricidad y Telecom. RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 201.237.0.0/16

Prefix
201.237.0.0/16
Origin
AS11830 AS11830
RPKI
RPKI valid
Size
65,536 addresses
Less specific
none
More specifics
130
IRR route objects
5 exact, 0 covering
In RouteViews
2026-10-12 08:02 UTC
Paths

How 201.237.0.0/16 is reached

Every path our looking glass collectors hold for this exact prefix. Open one for its attributes, or see them all side by side in the looking glass.

AS36601 TNT (TNT - Tampa, FL)Collector-1-TAMPA-FL36601 174 6762 11830
OriginAS11830 Instituto Costarricense de Electricidad y Telecom.
Origin codeIGP
Communities174:21000 174:22013 36601:150 36601:174 36601:2001
Updated4d 5h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 6762 11830
OriginAS11830 Instituto Costarricense de Electricidad y Telecom.
Origin codeIGP
Communities903:900 903:13760
Updated4d 13h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 6762 11830
OriginAS11830 Instituto Costarricense de Electricidad y Telecom.
Origin codeIGP
Communities36295:100
Updated4d 13h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 6762 11830
OriginAS11830 Instituto Costarricense de Electricidad y Telecom.
Origin codeIGP
Communitiesnone
Updated4d 13h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 6762 11830
OriginAS11830 Instituto Costarricense de Electricidad y Telecom.
Origin codeIGP
Communities174:21000 174:22013 36295:100 36295:174
Updated8d 7h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS11830 to originate 201.237.0.0/16 up to /24. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
201.237.0.0/16/24AS202 CENTURYLINK-LEGACY-LVLT-202LACNIC
201.237.0.0/16/24AS203 CENTURYLINK-LEGACY-LVLT-203LACNIC
201.237.0.0/16/24AS3356 LEVEL3LACNIC
201.237.0.0/16/24AS11830 AS11830LACNIC
IRR

Route objects

Registered in the IRR for this prefix and the ones covering it. Look it up live.

RouteOriginSourceDescriptionMaintained by
201.237.0.0/16AS202 CENTURYLINK-LEGACY-LVLT-202LACNICLACNIC generated route for Instituto Costarricense de Electricidad y Telecom.MNT-CR-ICEY-LACNIC
201.237.0.0/16AS203 CENTURYLINK-LEGACY-LVLT-203LACNICLACNIC generated route for Instituto Costarricense de Electricidad y Telecom.MNT-CR-ICEY-LACNIC
201.237.0.0/16AS3356 LEVEL3LACNICLACNIC generated route for Instituto Costarricense de Electricidad y Telecom.MNT-CR-ICEY-LACNIC
201.237.0.0/16AS11830 AS11830LACNICLACNIC generated route for Instituto Costarricense de Electricidad y Telecom.MNT-CR-ICEY-LACNIC
201.237.0.0/16AS11830 AS11830RADBCOLUMBUS NETWORKS TRANSIT CUSTOMERSMAINT-AS23520
More specific

Prefixes inside 201.237.0.0/16

130 announced prefixes fall inside this one.

Show the 130 prefixes
201.237.0.0/21 AS11830 AS11830201.237.0.0/24 AS11830 AS11830201.237.1.0/24 AS11830 AS11830201.237.2.0/24 AS11830 AS11830201.237.3.0/24 AS11830 AS11830201.237.4.0/24 AS11830 AS11830201.237.8.0/23 AS11830 AS11830201.237.11.0/24 AS11830 AS11830201.237.12.0/23 AS11830 AS11830201.237.14.0/24 AS11830 AS11830201.237.15.0/24 AS11830 AS11830201.237.17.0/24 AS11830 AS11830201.237.18.0/23 AS11830 AS11830201.237.20.0/24 AS11830 AS11830201.237.21.0/24 AS11830 AS11830201.237.22.0/24 AS11830 AS11830201.237.23.0/24 AS11830 AS11830201.237.24.0/24 AS11830 AS11830201.237.25.0/24 AS11830 AS11830201.237.26.0/24 AS11830 AS11830201.237.27.0/24 AS11830 AS11830201.237.28.0/24 AS11830 AS11830201.237.29.0/24 AS11830 AS11830201.237.30.0/24 AS11830 AS11830201.237.32.0/22 AS11830 AS11830201.237.36.0/23 AS11830 AS11830201.237.39.0/24 AS11830 AS11830201.237.40.0/23 AS11830 AS11830201.237.42.0/24 AS11830 AS11830201.237.46.0/24 AS11830 AS11830201.237.47.0/24 AS11830 AS11830201.237.48.0/24 AS11830 AS11830201.237.49.0/24 AS11830 AS11830201.237.51.0/24 AS11830 AS11830201.237.52.0/23 AS11830 AS11830201.237.54.0/24 AS11830 AS11830201.237.57.0/24 AS11830 AS11830201.237.59.0/24 AS11830 AS11830201.237.60.0/24 AS11830 AS11830201.237.64.0/23 AS11830 AS11830201.237.66.0/24 AS11830 AS11830201.237.70.0/24 AS11830 AS11830201.237.72.0/24 AS11830 AS11830201.237.73.0/24 AS11830 AS11830201.237.76.0/23 AS11830 AS11830201.237.78.0/24 AS11830 AS11830201.237.88.0/22 AS11830 AS11830201.237.92.0/23 AS11830 AS11830201.237.95.0/24 AS11830 AS11830201.237.96.0/23 AS11830 AS11830201.237.99.0/24 AS11830 AS11830201.237.100.0/23 AS11830 AS11830201.237.102.0/24 AS11830 AS11830201.237.104.0/22 AS11830 AS11830201.237.108.0/23 AS11830 AS11830201.237.110.0/24 AS11830 AS11830201.237.112.0/24 AS11830 AS11830201.237.116.0/23 AS11830 AS11830201.237.119.0/24 AS11830 AS11830201.237.123.0/24 AS11830 AS11830201.237.127.0/24 AS11830 AS11830201.237.128.0/24 AS11830 AS11830201.237.129.0/24 AS11830 AS11830201.237.130.0/24 AS11830 AS11830201.237.131.0/24 AS11830 AS11830201.237.132.0/24 AS11830 AS11830201.237.133.0/24 AS11830 AS11830201.237.134.0/24 AS11830 AS11830201.237.135.0/24 AS11830 AS11830201.237.136.0/24 AS11830 AS11830201.237.139.0/24 AS11830 AS11830201.237.140.0/24 AS11830 AS11830201.237.141.0/24 AS11830 AS11830201.237.142.0/24 AS11830 AS11830201.237.145.0/24 AS11830 AS11830201.237.148.0/24 AS11830 AS11830201.237.149.0/24 AS11830 AS11830201.237.154.0/24 AS11830 AS11830201.237.156.0/24 AS11830 AS11830201.237.157.0/24 AS11830 AS11830201.237.158.0/23 AS11830 AS11830201.237.160.0/24 AS11830 AS11830201.237.161.0/24 AS11830 AS11830201.237.162.0/24 AS11830 AS11830201.237.163.0/24 AS11830 AS11830201.237.167.0/24 AS11830 AS11830201.237.172.0/24 AS11830 AS11830201.237.174.0/23 AS11830 AS11830201.237.176.0/24 AS11830 AS11830201.237.177.0/24 AS11830 AS11830201.237.179.0/24 AS11830 AS11830201.237.180.0/22 AS11830 AS11830201.237.184.0/24 AS11830 AS11830201.237.185.0/24 AS11830 AS11830201.237.186.0/24 AS11830 AS11830201.237.187.0/24 AS11830 AS11830201.237.188.0/24 AS11830 AS11830201.237.190.0/24 AS11830 AS11830201.237.191.0/24 AS11830 AS11830201.237.192.0/24 AS11830 AS11830201.237.194.0/24 AS11830 AS11830201.237.195.0/24 AS11830 AS11830201.237.196.0/24 AS11830 AS11830201.237.198.0/23 AS11830 AS11830201.237.203.0/24 AS11830 AS11830201.237.207.0/24 AS11830 AS11830201.237.208.0/23 AS11830 AS11830201.237.212.0/24 AS11830 AS11830201.237.213.0/24 AS11830 AS11830201.237.214.0/24 AS11830 AS11830201.237.215.0/24 AS11830 AS11830201.237.216.0/24 AS11830 AS11830201.237.218.0/23 AS11830 AS11830201.237.222.0/24 AS11830 AS11830201.237.223.0/24 AS11830 AS11830201.237.224.0/23 AS11830 AS11830201.237.226.0/24 AS11830 AS11830201.237.227.0/24 AS11830 AS11830201.237.228.0/23 AS11830 AS11830201.237.230.0/24 AS11830 AS11830201.237.232.0/24 AS11830 AS11830201.237.234.0/24 AS11830 AS11830201.237.235.0/24 AS11830 AS11830201.237.237.0/24 AS11830 AS11830201.237.239.0/24 AS11830 AS11830201.237.246.0/24 AS11830 AS11830201.237.247.0/24 AS11830 AS11830201.237.249.0/24 AS11830 AS11830201.237.250.0/23 AS11830 AS11830201.237.252.0/22 AS11830 AS11830
Tools

Check 201.237.0.0/16 live

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