ResearchRouting table, RPKI, IRR & looking glass

AS12271 Charter Communications Inc

AS12271 (TWC-12271-NYC) is registered to Charter Communications Inc in US. It originates 119 prefixes in the global routing table.

111
IPv4 prefixes
8
IPv6 prefixes
2,864,640
IPv4 addresses
93%
RPKI valid

Who holds AS12271

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

AS number
AS12271
Handle
TWC-12271-NYC
Organization
Charter Communications Inc
Country
US
ASPA
None published

What AS12271 announces

Prefixes originated by AS12271 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
111
IPv6 prefixes
8
IPv4 addresses
2,864,640 (11,190 /24s)
RPKI valid
111 93%
RPKI invalid
0
RPKI not found
8
ROAs naming AS12271
127
With an IRR route object
118 99%

Announced prefixes

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

IPv4 (111)
23.246.64.0/1824.29.96.0/1924.29.128.0/1924.30.224.0/2024.39.104.0/2124.39.112.0/2024.39.128.0/1924.90.0.0/1624.97.123.0/2424.97.124.0/2224.97.184.0/2324.97.200.0/2124.102.64.0/1824.103.0.0/1724.103.224.0/1924.104.192.0/1824.105.128.0/1924.136.96.0/1924.161.0.0/1724.164.128.0/1824.168.0.0/1724.168.128.0/1924.193.0.0/1624.213.160.0/1947.230.0.0/1650.74.0.0/1650.75.192.0/1865.86.104.0/2166.65.0.0/1766.65.128.0/1866.93.136.0/2166.108.0.0/1666.110.97.0/2467.243.0.0/1667.244.0.0/1967.244.64.0/1867.245.0.0/1667.247.0.0/1867.247.96.0/1967.250.0.0/1667.251.128.0/1967.251.192.0/1867.254.0.0/1668.165.184.0/2168.172.208.0/2068.172.224.0/1968.173.0.0/1668.174.0.0/1668.175.0.0/1769.193.128.0/1869.193.192.0/1969.193.224.0/1969.200.64.0/1969.200.224.0/1969.200.240.0/2169.201.128.0/1769.202.128.0/1769.203.0.0/1769.203.128.0/1969.203.192.0/1869.204.224.0/1969.206.0.0/1672.43.96.0/1972.43.128.0/1872.225.64.0/1872.225.128.0/1772.226.0.0/1772.227.128.0/1772.229.0.0/1672.231.0.0/1774.0.136.0/2174.64.0.0/1674.65.192.0/1874.66.0.0/1674.68.0.0/1674.71.0.0/1674.72.0.0/1576.58.52.0/2398.0.128.0/1798.7.0.0/1798.7.192.0/1898.12.0.0/1698.13.128.0/1798.14.0.0/15108.176.0.0/18108.176.128.0/18142.105.0.0/17142.255.0.0/17149.89.0.0/16150.221.96.0/19150.224.177.0/24158.222.128.0/17168.148.128.0/19172.254.0.0/16184.74.128.0/17184.75.0.0/17184.152.0.0/16184.153.0.0/17192.61.128.0/19192.131.40.0/22198.151.199.0/24198.151.200.0/24198.151.201.0/24198.151.202.0/24198.151.203.0/24198.179.64.0/19204.210.128.0/19207.251.238.0/23208.105.0.0/18208.105.64.0/19208.125.0.0/19
IPv6 (8)

RPKI valid   RPKI invalid   no ROA covers it

Who AS12271 is reached through

The AS just before AS12271 in the paths our looking glass collectors hold, for 60 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

Provider authorization

AS12271 publishes no ASPA of its own. 1 AS name it as a provider in theirs. Check a path.

The 1 ASes that name AS12271 as a provider

Routing registry objects

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

Sourceas-nameMaintained by
ARINCharter-Communications-TWC-12271-NYCMNT-CC-3517
RADBRR-NYCMAINT-RR

Route objects with origin AS12271: RADB 104 · ARIN 38 · LEVEL3 5

as-sets that list AS12271 (14)