ResearchRouting table, RPKI, IRR & looking glass

AS23028 Team Cymru Inc.

AS23028 (TEAM-CYMRU) is registered to Team Cymru Inc. in US. It originates 44 prefixes in the global routing table.

28
IPv4 prefixes
16
IPv6 prefixes
17,920
IPv4 addresses
2%
RPKI valid
Registration

Who holds AS23028

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

AS number
AS23028
Handle
TEAM-CYMRU
Organization
Team Cymru Inc.
Country
US
ASPA
9 providers
Routing

What AS23028 announces

Prefixes originated by AS23028 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
28
IPv6 prefixes
16
IPv4 addresses
17,920 (70 /24s)
RPKI valid
1 2%
RPKI invalid
0
RPKI not found
43
ROAs naming AS23028
5
With an IRR route object
10 22%
Prefixes

Announced prefixes

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

IPv4 (28)
38.229.33.0/2438.229.252.0/2468.22.187.0/24192.138.226.0/24203.28.18.0/24204.74.64.0/24216.31.0.0/18216.31.0.0/24216.31.1.0/24216.31.2.0/24216.31.3.0/24216.31.4.0/24216.31.6.0/24216.31.7.0/24216.31.8.0/24216.31.9.0/24216.31.12.0/24216.31.13.0/24216.31.14.0/24216.31.15.0/24216.31.17.0/24216.31.18.0/24216.31.19.0/24216.31.20.0/24216.31.36.0/24216.31.37.0/24216.31.38.0/24216.31.39.0/24
IPv6 (16)
2604:8800::/322604:8800::/472604:8800:20::/482604:8800:50::/472604:8800:52::/482604:8800:53::/482604:8800:60::/482604:8800:64::/482604:8800:65::/482604:8800:66::/482604:8800:67::/482604:8800:68::/482604:8800:69::/482604:8800:70::/482604:8800:71::/482620:0:6b0::/48

RPKI valid   RPKI invalid   no ROA covers it

Neighbors

Who AS23028 is reached through

The AS just before AS23028 in the paths our looking glass collectors hold, for 44 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

AS6939 HURRICANE 32AS6461 ZAYO-6461 27AS2914 NTT-DATA-2914 10AS3257 GTT-BACKBONE 5AS16509 AMAZON-02 1
ASPA

Provider authorization

AS23028 publishes an ASPA naming these providers. Check a path.

AS174 COGENT-174AS2914 NTT-DATA-2914AS6461 ZAYO-6461AS6939 HURRICANEAS7018 ATT-INTERNET4AS8220 COLTAS14618 AMAZON-AESAS16509 AMAZON-02AS23352 SERVERCENTRAL
IRR

Routing registry objects

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

Sourceas-nameMaintained by
RADBTEAMC-1MAINT-AS23028

Route objects with origin AS23028: RADB 12 · ARIN 7 · ALTDB 4

as-sets that list AS23028 (23)
AS-GBLXAS-GTTCUSTAS-GTTCUST6AS-HURRICANEAS-HURRICANEV6AS-LEVEL3-ORIGINS-NAAS-LIMELIGHT-CUSTAS-RCN-CE-PEERSAS-SUMMITHQ-CUSTOMERSAS-SUMMITHQ-TESTINGAS-TRANSROUTE-SPECAS-WEBWERKS-1AS12897:AS-AMSIX-RS-PEERSAS134783:AS-ALLAS16509:AS-AMAZON-BYO-US-EAST-2AS23028:AS-CONEAS2764:AS-CUSTOMERS:AS9822AS2764:AS-TRANSIT:AS9822AS3303:AS-SWCMPEERSAS33495:AS-MEMBERSAS6777:AS-AMS-IX-RSAS6777:AS-AMS-IX-RS-V6AS680:AS-AMSIX-RS-PEERS
Tools

Check AS23028 live

ASN lookup and WHOISRPKI validatorASPA validatorIRR lookup