ResearchRouting table, RPKI, IRR & looking glass

AS31727 Node4 Limited

AS31727 (NODE4-AS) is registered to Node4 Limited in GB. It originates 145 prefixes in the global routing table.

143
IPv4 prefixes
2
IPv6 prefixes
60,672
IPv4 addresses
1%
RPKI valid

Who holds AS31727

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

AS number
AS31727
Handle
NODE4-AS
Organization
Node4 Limited
Country
GB
ASPA
None published

What AS31727 announces

Prefixes originated by AS31727 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
143
IPv6 prefixes
2
IPv4 addresses
60,672 (237 /24s)
RPKI valid
2 1%
RPKI invalid
0
RPKI not found
143
ROAs naming AS31727
3
With an IRR route object
115 79%

Announced prefixes

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

IPv4 (143)
5.77.39.0/245.77.55.0/245.77.62.0/2346.175.50.0/2446.175.51.0/2446.231.184.0/2146.231.185.0/2446.231.187.0/2446.231.190.0/2462.192.128.0/2462.192.129.0/2477.111.212.0/2277.111.216.0/2177.111.221.0/2477.111.224.0/2277.111.225.0/2482.196.224.0/2482.196.234.0/2483.166.160.0/1983.166.160.0/2483.166.164.0/2483.166.165.0/2483.166.167.0/2483.166.168.0/2483.166.171.0/2483.166.172.0/2483.166.176.0/2483.166.177.0/2483.166.184.0/2489.248.48.0/2089.248.48.0/2189.248.48.0/2489.248.49.0/2489.248.53.0/2489.248.54.0/2489.248.55.0/2489.248.56.0/2489.248.58.0/2489.248.59.0/2489.248.63.0/2489.255.174.0/2391.236.26.0/2393.174.136.0/2293.174.136.0/2493.174.137.0/2493.174.140.0/2293.174.141.0/24109.75.172.0/24109.75.175.0/24109.203.96.0/24109.203.98.0/24109.203.100.0/23109.203.102.0/24109.203.107.0/24109.203.109.0/24109.203.114.0/24109.203.116.0/24109.203.118.0/24109.203.119.0/24109.203.120.0/24109.203.123.0/24109.203.124.0/23109.203.126.0/24109.234.192.0/21109.234.192.0/24109.234.193.0/24109.234.197.0/24109.234.198.0/24109.234.200.0/21109.234.200.0/24109.234.202.0/24109.234.203.0/24109.234.204.0/24109.234.205.0/24109.234.206.0/24109.234.207.0/24148.253.128.0/19148.253.129.0/24148.253.130.0/24148.253.131.0/24148.253.133.0/24148.253.139.0/24148.253.142.0/24148.253.143.0/24148.253.144.0/24148.253.149.0/24148.253.151.0/24148.253.152.0/24148.253.153.0/24148.253.156.0/24157.96.9.0/24157.96.10.0/23157.96.10.0/24157.96.11.0/24157.96.14.0/23157.96.14.0/24157.96.15.0/24157.96.20.0/23157.96.23.0/24157.96.26.0/23157.96.27.0/24157.96.33.0/24157.96.36.0/23157.96.40.0/24157.96.42.0/24157.96.47.0/24157.96.61.0/24157.96.63.0/24157.96.64.0/24157.96.67.0/24157.96.76.0/23157.96.78.0/24157.96.80.0/24157.96.82.0/23157.96.89.0/24158.255.40.0/24158.255.44.0/24158.255.45.0/24158.255.46.0/24158.255.47.0/24
Show 23 more
IPv6 (2)

RPKI valid   RPKI invalid   no ROA covers it

Who AS31727 is reached through

The AS just before AS31727 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.

Routing registry objects

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