DNSRegistration lookup
HOW THE INTERNET SEES A NETWORK

BGP looking glass.

Explore routing observations, origin networks and RPKI validation.

201.21.128.0

RIPE RIS
Retrieved · 2026-10-31T07:02:43+00:00Observed · 2026-10-31T07:01:57ZView JSON
Registration / WHOIS →
Prefix
201.21.128.0/23
Origin ASN
AS28573
Collectors shown
3
Paths shown
10

RPKI origin validation

201.21.128.0/23 · AS28573Valid
Covering ROAs
  • 201.21.0.0/16 · AS28573 · max length /24

Valid authorizes this prefix and origin ASN. It does not validate the AS path. No ROA means no covering authorization was found.

Collector / peerAS pathLast confirmed (UTC)Details
RRC24
138.122.60.1		61573 37468 22356 285732026-10-31T07:02:36Z
Show
Prefix
201.21.128.0/23
Next hop
138.122.60.1
Last changed
2026-10-30T09:59:02Z
Communities
61573:61573
Large communities
None supplied
Extended communities
None supplied
RRC24
177.101.16.80		53046 61626 285732026-10-31T07:02:39Z
Show
Prefix
201.21.128.0/23
Next hop
177.101.16.80
Last changed
2026-10-26T20:32:48Z
Communities
None supplied
Large communities
None supplied
Extended communities
None supplied
RRC15
187.16.216.103		28624 61568 37468 22356 285732026-10-31T07:02:37Z
Show
Prefix
201.21.128.0/23
Next hop
187.16.216.103
Last changed
2026-10-06T20:05:59Z
Communities
22356:2000 22356:2010 22356:11100 22356:11120 22356:65055 37468:1000 37468:1300 37468:1329 37468:1330 37468:13000 37468:13100 37468:13101 37468:37468 61568:65202 61568:65501 28624:61568
Large communities
None supplied
Extended communities
None supplied
RRC15
187.16.216.209		28634 273478 13786 22356 285732026-10-31T07:02:39Z
Show
Prefix
201.21.128.0/23
Next hop
187.16.216.209
Last changed
2026-10-26T20:37:03Z
Communities
53013:11153
Large communities
None supplied
Extended communities
None supplied
RRC15
187.16.217.161		13786 22356 285732026-10-31T07:02:39Z
Show
Prefix
201.21.128.0/23
Next hop
187.16.217.161
Last changed
2026-10-21T04:32:11Z
Communities
13786:110 13786:5500 13786:5511 13786:22356 13786:40000 13786:45504 22356:2000 22356:2010 22356:11100 22356:11120 22356:65055
Large communities
None supplied
Extended communities
None supplied
RRC15
187.16.222.107		263152 53013 13786 22356 285732026-10-31T07:02:39Z
Show
Prefix
201.21.128.0/23
Next hop
187.16.222.107
Last changed
2026-10-22T05:30:36Z
Communities
11200:53013
Large communities
None supplied
Extended communities
None supplied
RRC15
187.16.223.70		262427 262761 263444 22356 285732026-10-31T07:02:39Z
Show
Prefix
201.21.128.0/23
Next hop
187.16.223.70
Last changed
2026-10-12T12:52:58Z
Communities
None supplied
Large communities
None supplied
Extended communities
4:18547388
RRC19
196.60.8.190		37239 37468 22356 285732026-10-31T07:02:40Z
Show
Prefix
201.21.128.0/23
Next hop
196.60.8.190
Last changed
2026-10-24T03:59:15Z
Communities
37468:332
Large communities
None supplied
Extended communities
None supplied
RRC19
196.60.9.84		37697 37468 22356 285732026-10-31T07:02:39Z
Show
Prefix
201.21.128.0/23
Next hop
196.60.9.84
Last changed
2026-10-24T06:40:37Z
Communities
22356:2000 22356:2010 22356:11100 22356:11120 22356:65055 37468:1000 37468:1300 37468:1329 37468:1330 37468:13000 37468:13100 37468:13101 37468:37468 37697:1000
Large communities
None supplied
Extended communities
None supplied
RRC19
196.60.9.165		917 60068 37468 22356 285732026-10-31T07:02:39Z
Show
Prefix
201.21.128.0/23
Next hop
196.60.9.165
Last changed
2026-10-24T06:41:07Z
Communities
917:59001 22356:2000 22356:2010 22356:11100 22356:11120 22356:65055 37468:1000 37468:1300 37468:1329 37468:1330 37468:13000 37468:13100 37468:13101 37468:37468 57695:13000 60068:204 60068:2000 60068:2330 60068:7180
Large communities
None supplied
Extended communities
None supplied

RIPEstat / RIS observations represent participating peers, not every router on the Internet. Collector processing and snapshots introduce a delay.