ResearchRouting table, RPKI, IRR & looking glass

AS17035 NBCUniversal

AS17035 (NBCUNI-17035) is registered to NBCUniversal in US. It originates 38 prefixes in the global routing table.

38
IPv4 prefixes
0
IPv6 prefixes
24,320
IPv4 addresses
44%
RPKI valid
Registration

Who holds AS17035

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

AS number
AS17035
Handle
NBCUNI-17035
Organization
NBCUniversal
Country
US
ASPA
None published
Routing

What AS17035 announces

Prefixes originated by AS17035 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
38
IPv6 prefixes
0
IPv4 addresses
24,320 (95 /24s)
RPKI valid
17 44%
RPKI invalid
0
RPKI not found
21
ROAs naming AS17035
23
With an IRR route object
22 57%
Prefixes

Announced prefixes

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

IPv4 (38)
8.11.200.0/2450.149.85.0/2450.172.163.0/2450.175.130.0/2450.200.194.0/2450.207.32.0/2150.218.3.0/2450.218.20.0/2450.218.36.0/2450.220.223.0/2450.221.27.0/2450.221.162.0/2350.225.179.0/2450.227.232.0/2450.228.144.0/2050.229.129.0/2450.230.144.0/2070.39.32.0/2470.39.44.0/2470.39.45.0/2470.39.46.0/2470.39.47.0/2470.39.48.0/2470.39.49.0/2470.39.58.0/2470.39.59.0/2470.39.61.0/2470.39.62.0/24173.213.208.0/24192.251.69.0/24204.237.248.0/23209.23.192.0/22209.116.149.0/24216.4.176.0/22216.4.176.0/23216.4.178.0/23216.178.96.0/21216.178.104.0/21

RPKI valid   RPKI invalid   no ROA covers it

Neighbors

Who AS17035 is reached through

The AS just before AS17035 in the paths our looking glass collectors hold, for 38 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

AS3257 GTT-BACKBONE 10AS3356 LEVEL3 8AS7922 COMCAST-7922 8AS20214 COMCAST-20214 3AS33287 COMCAST-33287 2AS46887 CROWNCASTLE-AS46887 2AS8220 COLT 2AS702 UUNET 2AS17060 E-NETWORKS 2AS701 UUNET 2AS33491 COMCAST-33491 1AS394437 PSLIGHTWAVE 1AS33651 CMCS 1AS33657 CMCS 1AS7015 COMCAST-7015 1AS33662 CMCS 1
IRR

Routing registry objects

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

Sourceas-nameMaintained by
NTTCOMNBCUNI-17035MAINT-PSLIGHTWAVE

Route objects with origin AS17035: RADB 20 · ARIN 10 · NTTCOM 1

as-sets that list AS17035 (13)
AS-CCFAS-CCF-TESTAS-COMCAST-EDIAAS-COMCAST-IBONEAS-GTTCUSTAS-GTTCUST6AS-LUMEN-CUSTOMERS-ASNSAS-MFNXAS-PSLIGHTWAVEAS394437:AS-PSLIGHTWAVE-L3AS394437:AS-TESTINGAS6128:AS-CUSTOMERSAS8220:AS-COLTUK
Tools

Check AS17035 live

ASN lookup and WHOISRPKI validatorASPA validatorIRR lookup