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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

AS33663 · 

curl -s "https://thenetworkery.com/api/v1/network-report?query=AS33663"
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Warning: AS33663 (CMCS) announces nothing right now. 2 warnings

AS pageAS33663
HolderCMCS - Comcast Cable Communications, LLC
AllocationARIN, United States (US), assigned 2005-02-16
Prefixes (IPv4 / IPv6)0 / 0

What to fix

  1. Warning

    No IRR as-set is listed.

    Peers and route servers build prefix filters from the as-set. Without one they fall back to the AS number alone, which breaks as soon as you have customers.

    Fix: Create an as-set in your RIR’s IRR database and add it to your PeeringDB record.

    Open in PeeringDB lookup

  2. Warning

    No public NOC, policy or technical contact.

    Other networks use these addresses to set up peering and to reach you during an incident.

    Fix: Add a role contact (for example noc@ or peering@ an address you monitor) with visibility Public.

    Open in PeeringDB lookup

Checks

Routing and RPKI AS33663 is not announcing anything right now.
  • Info: AS33663 is not announcing anything right now.
HolderCMCS - Comcast Cable Communications, LLC
IPv4 prefixes0
IPv6 prefixes0
Downstream networks0

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.
NameCMCS
HandleAS33663
RangeAS33663
Statusactive
Registered2005-02-16T14:59:31-05:00
Last changed2021-01-25T15:24:00-05:00
Abuse contactabuse@comcast.net
Allocation
Registry (RIR)ARIN
CountryUnited States (US)
Delegated on2005-02-16
StatusAssigned
Delegated rangeAS33663

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

Contacts
RoleNameEmail
registrant Comcast Cable Communications, LLC

Source: https://rdap.arin.net/registry/autnum/33663. 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 No IRR as-set is listed.
  • Pass: AS33663 is in PeeringDB as Comcast Cable.
  • Info: No internet exchange ports are listed.
  • Warning: No IRR as-set is listed.
  • Warning: No public NOC, policy or technical contact.
  • Info: The record was last updated 2023-01-14.
NetworkComcast Cable
AS numberAS33663
Type, Not Disclosed
Prefixes (IPv4 / IPv6)0 / 0
TrafficNot Disclosed
Ratio requiredNo
Last updated2023-01-14

Source: PeeringDB. Results are cached for an hour.

Open in PeeringDB lookup