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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

AS1255 · 

curl -s "https://thenetworkery.com/api/v1/network-report?query=AS1255"
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Warning: AS1255 (SMITHCOLLEGE-AS) announces 14 IPv4 and 0 IPv6 prefixes. 4 warnings

AS pageAS1255
HolderSMITHCOLLEGE-AS - Smith College
AllocationARIN, United States (US), assigned 1991-04-24
Prefixes (IPv4 / IPv6)14 / 0
RPKI valid0% (0 / 14)
Upstreams and peers1

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 14 announced prefixes have no ROA (RPKI not found): 131.229.0.0/17, 131.229.0.0/24, 131.229.1.0/24, 131.229.2.0/24, 131.229.3.0/24 (+5).

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

    Fix: Create a ROA for each at your RIR portal, with origin AS1255 and a max length equal to the prefix length:

    131.229.0.0/17 AS1255 max-length /17
131.229.0.0/24 AS1255 max-length /24
131.229.1.0/24 AS1255 max-length /24
131.229.2.0/24 AS1255 max-length /24
131.229.3.0/24 AS1255 max-length /24
131.229.4.0/24 AS1255 max-length /24
131.229.5.0/24 AS1255 max-length /24
131.229.6.0/24 AS1255 max-length /24
131.229.8.0/24 AS1255 max-length /24
131.229.40.0/23 AS1255 max-length /23

    Open in RPKI / ROA validator Guide

  3. Warning

    14 of 14 announced prefixes have no IRR route object: 131.229.1.0/24, 131.229.3.0/24, 131.229.42.0/23, 131.229.5.0/24, 131.229.2.0/24 (+9).

    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 AS1255 in your RIR’s IRR database (or RADB).

    route: 131.229.1.0/24
origin: AS1255

route: 131.229.3.0/24
origin: AS1255

route: 131.229.42.0/23
origin: AS1255

    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: AS1255 announces 14 IPv4 and 0 IPv6 prefixes.
  • Warning: No IPv6 prefixes announced.
  • Warning: 10 of 14 announced prefixes have no ROA (RPKI not found): 131.229.0.0/17, 131.229.0.0/24, 131.229.1.0/24, 131.229.2.0/24, 131.229.3.0/24 (+5).
  • Info: The RPKI state of 4 prefixes was not looked up (no ROA of AS1255 covers them; only the first 10 are checked).
  • Warning: 14 of 14 announced prefixes have no IRR route object: 131.229.1.0/24, 131.229.3.0/24, 131.229.42.0/23, 131.229.5.0/24, 131.229.2.0/24 (+9).
  • Info: One upstream or peer seen (AS1968): an outage there takes the whole network off the internet.
HolderSMITHCOLLEGE-AS - Smith College
IPv4 prefixes14
IPv6 prefixes0
RPKI10 not found · 4 not looked up
Without IRR route object14
Downstream networks0
Routes to fix
PrefixRPKI
131.229.0.0/17 No ROA
131.229.0.0/24 No ROA
131.229.1.0/24 No ROA
131.229.2.0/24 No ROA
131.229.3.0/24 No ROA
131.229.4.0/24 No ROA
131.229.5.0/24 No ROA
131.229.6.0/24 No ROA
131.229.8.0/24 No ROA
131.229.40.0/23 No ROA

Upstreams and peers seen to the left 1

AS1968 UMASSNET-AS1968

Announced prefixes 14

131.229.0.0/17 131.229.0.0/24 131.229.1.0/24 131.229.2.0/24 131.229.3.0/24 131.229.4.0/24 131.229.5.0/24 131.229.6.0/24 131.229.8.0/24 131.229.40.0/23 131.229.42.0/23 131.229.44.0/23 131.229.46.0/23 131.229.67.0/24

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.
NameSMITHCOLLEGE-AS
HandleAS1255
RangeAS1255
Statusactive
Registered1991-04-24T00:00:00-04:00
Last changed2021-12-10T12:51:18-05:00
Abuse contactabuse@smith.edu
Allocation
Registry (RIR)ARIN
CountryUnited States (US)
Delegated on1991-04-24
StatusAssigned
Delegated rangeAS1255

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

Contacts
RoleNameEmail
registrant Smith College
technical John A Crowley jcrowley@smith.edu

Source: https://rdap.arin.net/registry/autnum/1255. 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