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Network report

Who holds an IP address, prefix or AS number, how it is routed (origin AS, RPKI, IRR), its reverse DNS, blocklist listings and PeeringDB record, with what to fix first.

IP address, prefix or AS number

AS21504 · 

curl -s "https://thenetworkery.com/api/v1/network-report?query=AS21504"
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Warning: AS21504 (BESSEMER-GROUP-INCORPORATED) announces 20 IPv4 and 0 IPv6 prefixes. 4 warnings

AS pageAS21504
HolderBESSEMER-GROUP-INCORPORATED - The Bessemer Group, Inc.
AllocationARIN, United States (US), assigned 2014-05-28
Prefixes (IPv4 / IPv6)20 / 0
RPKI valid20% (4 / 20)
Upstreams and peers9

What to fix

  1. Warning

    No IPv6 prefixes announced.

    Networks without IPv6 force their users through NAT64 or leave them unreachable from IPv6-only networks.

    Fix: Get an IPv6 allocation from your RIR (usually free with your IPv4 membership) and announce it.

    Open in ASN & BGP prefix lookup

  2. Warning

    10 of 20 announced prefixes have no ROA (RPKI not found): 198.160.34.0/24, 198.160.35.0/24, 198.160.37.0/24, 198.160.38.0/24, 198.160.39.0/24 (+5).

    Without a ROA, networks cannot tell your routes from a hijack.

    Fix: Create a ROA for each at your RIR portal, with origin AS21504 and a max length equal to the prefix length:

    198.160.34.0/24 AS21504 max-length /24
198.160.35.0/24 AS21504 max-length /24
198.160.37.0/24 AS21504 max-length /24
198.160.38.0/24 AS21504 max-length /24
198.160.39.0/24 AS21504 max-length /24
198.160.40.0/24 AS21504 max-length /24
198.160.42.0/24 AS21504 max-length /24
198.160.43.0/24 AS21504 max-length /24
198.160.44.0/24 AS21504 max-length /24
198.160.48.0/24 AS21504 max-length /24

    Open in RPKI / ROA validator Guide

  3. Warning

    3 of 20 announced prefixes have no IRR route object: 198.160.37.0/24, 198.160.39.0/24, 198.160.48.0/24.

    Many networks build their prefix filters from IRR data; without route objects some of them drop the routes.

    Fix: Create route (IPv4) and route6 (IPv6) objects with origin AS21504 in your RIR’s IRR database (or RADB).

    route: 198.160.37.0/24
origin: AS21504

route: 198.160.39.0/24
origin: AS21504

route: 198.160.48.0/24
origin: AS21504

    Open in ASN & BGP prefix lookup

  4. Warning

    PeeringDB did not answer: HTTP 404

    Fix: Try again in a minute.

    Open in PeeringDB lookup

Checks

Routing and RPKI No IPv6 prefixes announced.
  • Pass: AS21504 announces 20 IPv4 and 0 IPv6 prefixes.
  • Warning: No IPv6 prefixes announced.
  • Warning: 10 of 20 announced prefixes have no ROA (RPKI not found): 198.160.34.0/24, 198.160.35.0/24, 198.160.37.0/24, 198.160.38.0/24, 198.160.39.0/24 (+5).
  • Info: 4 of 20 announced prefixes are RPKI valid.
  • Info: The RPKI state of 6 prefixes was not looked up (no ROA of AS21504 covers them; only the first 10 are checked).
  • Warning: 3 of 20 announced prefixes have no IRR route object: 198.160.37.0/24, 198.160.39.0/24, 198.160.48.0/24.
  • Info: 9 upstreams and peers, 0 downstream networks seen.
HolderBESSEMER-GROUP-INCORPORATED - The Bessemer Group, Inc.
IPv4 prefixes20
IPv6 prefixes0
RPKI4 valid · 10 not found · 6 not looked up
Without IRR route object3
Downstream networks0
Routes to fix
PrefixRPKI
198.160.34.0/24 No ROA
198.160.35.0/24 No ROA
198.160.37.0/24 No ROA
198.160.38.0/24 No ROA
198.160.39.0/24 No ROA
198.160.40.0/24 No ROA
198.160.42.0/24 No ROA
198.160.43.0/24 No ROA
198.160.44.0/24 No ROA
198.160.48.0/24 No ROA

Upstreams and peers seen to the left 9

AS46887 Crown Castle AS46450 Pilot Fiber, Inc. AS6461 Zayo AS174 Cogent Communications, Inc. AS55002 Defense.Net AS54004 Lightpath AS3356 Lumen AS3356 AS701 Verizon AS33287 Comcast

Announced prefixes 20

198.160.34.0/24 198.160.35.0/24 198.160.37.0/24 198.160.38.0/24 198.160.39.0/24 198.160.40.0/24 198.160.42.0/24 198.160.43.0/24 198.160.44.0/24 198.160.45.0/24 198.160.48.0/24 198.160.49.0/24 198.160.50.0/23 198.160.50.0/24 198.160.51.0/24 198.160.52.0/24 198.160.53.0/24 198.160.54.0/24 198.160.55.0/24 198.160.57.0/24

Source: RIPEstat (RIPE NCC RIS, Routinator, IRR); AS names: Team Cymru

Open in ASN & BGP prefix lookup
Registration Found at rdap.arin.net.
  • Pass: Found at rdap.arin.net.
NameBESSEMER-GROUP-INCORPORATED
HandleAS21504
RangeAS21504
Statusactive
Registered2014-05-28T16:35:32-04:00
Last changed2014-05-28T16:35:32-04:00
Abuse contacttechops@bessemer.com
Allocation
Registry (RIR)ARIN
CountryUnited States (US)
Delegated on2014-05-28
StatusAssigned
Delegated rangeAS21504

Source: RIR delegation data, updated daily. The country is where the range was registered, not necessarily where it is used.

Contacts
RoleNameEmail
registrant The Bessemer Group, Inc.

Source: https://rdap.arin.net/registry/autnum/21504. Registration data from rdap.arin.net, shown under its terms of use (terms): not for marketing or bulk collection.

Open in WHOIS / RDAP lookup
PeeringDB PeeringDB did not answer: HTTP 404
  • Warning: PeeringDB did not answer: HTTP 404

Source: PeeringDB. Results are cached for an hour.

Open in PeeringDB lookup