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AS numbers

AS21100 ITL Company AS21100

AS21100 is operated by ITL Company AS21100 and registered with RIPE NCC (US) since 2001-08-27.

It announces 36 IPv4 and 8 IPv6 prefixes, 88% of them RPKI valid.

RIPE RIS sees 49 upstream and peer networks and 6 downstream networks next to it.

PeeringDB lists it with no exchanges or facilities. Its peering policy is open.

NameITL Company AS21100
Registry (RIR)RIPE NCC
CountryUnited States (US)
Delegated on2001-08-27
Network typeNot Disclosed
Peering policyOpen
Prefixes (IPv4 / IPv6)36 / 8
RPKI valid88% (39 / 44)
Upstreams and peers49
Downstream networks6

Routing health

  • AS21100 announces 36 IPv4 and 8 IPv6 prefixes.
  • 39 of 44 announced prefixes are RPKI valid.
  • 5 announced prefixes are not covered by a ROA of AS21100 (they may have none, or another network’s).
  • 49 upstreams and peers, 6 downstream networks seen.

For every check with the fix (IRR route objects, the RPKI state of each route, reverse DNS and the registration), run the full network report.

Announced prefixes 44

  • 5.34.180.0/23
  • 5.34.182.0/24
  • 45.128.150.0/24
  • 46.28.65.0/24
  • 46.28.66.0/24
  • 46.28.68.0/24
  • 46.28.69.0/24
  • 82.118.16.0/24
  • 82.118.19.0/24
  • 91.90.192.0/24
  • 91.90.194.0/24
  • 91.223.123.0/24
  • 91.228.146.0/23
  • 91.235.129.0/24
  • 93.187.64.0/24
  • 185.14.28.0/22
  • 185.62.0.0/24
  • 185.174.172.0/22
  • 185.198.164.0/22
  • 185.237.206.0/23
  • 193.106.150.0/24
  • 193.161.202.0/24
  • 193.238.152.0/24
  • 195.54.162.0/24
  • 195.123.216.0/21
  • 195.123.236.0/24
  • 195.123.237.0/24
  • 195.245.112.0/23
  • 212.8.245.0/24
  • 213.134.2.0/24
  • 217.12.200.0/23
  • 217.12.208.0/23
  • 217.12.215.0/24
  • 217.12.218.0/24
  • 217.12.219.0/24
  • 217.12.220.0/24
  • 2a0e:40c0:2::/48
  • 2a02:27a9::/32
  • 2a02:27ab::/32
  • 2a02:27ae::/32
  • 2a02:27af::/32
  • 2a06:c6c0::/48
  • 2a06:fcc0:3::/48
  • 2001:67c:2f5c::/48

Upstreams and peers 49

The networks RIPE RIS sees next to AS21100 in BGP paths, the most visible first.

Peering

Peering policy: Open. Suggested max-prefix limits: 0 IPv4, 0 IPv6. PeeringDB record

More about AS21100

Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-15 01:29 UTC. The country is where the AS number was registered, not necessarily where the network operates.