IPv4 Subnet 23.151.232.0/24 blackholed?

Wed Apr 26 12:54:23 UTC 2023

You're welcome to use our looking glasses which over Europe and Africa:

https://as37100.net/

But so far, we are seeing this in AMS:

BGP routing table entry for 23.151.232.0/24, version 2411923092
Paths: (2 available, best #2, table default)
   Not advertised to any peer
   Refresh Epoch 1
   37100 3257 23470 23470 23470 23470
     105.26.64.17 from 105.26.64.17 (105.16.0.131)
       Origin IGP, metric 0, localpref 100, valid, external
       Community: 37100:1 37100:13
       path 211B5070 RPKI State not found
       rx pathid: 0, tx pathid: 0
   Refresh Epoch 1
   37100 3257 23470 23470 23470 23470
     105.26.64.1 from 105.26.64.1 (105.16.0.131)
       Origin IGP, metric 0, localpref 100, valid, external, best
       Community: 37100:1 37100:13
       path 211B6A5C RPKI State not found
       rx pathid: 0, tx pathid: 0x0

And in JNB:

BGP routing table entry for 23.151.232.0/24, version 1526622268
Paths: (2 available, best #2, table default)
   Not advertised to any peer
   Refresh Epoch 1
   37100 3257 23470 23470 23470 23470
     105.22.32.1 from 105.22.32.1 (105.16.0.163)
       Origin IGP, metric 0, localpref 100, valid, external
       Community: 37100:1 37100:13
       path 44E5427C RPKI State not found
       rx pathid: 0, tx pathid: 0
   Refresh Epoch 1
   37100 3257 23470 23470 23470 23470
     105.22.40.1 from 105.22.40.1 (105.16.0.162)
       Origin IGP, metric 0, localpref 100, valid, external, best
       Community: 37100:1 37100:13
       path 44E60E94 RPKI State not found
       rx pathid: 0, tx pathid: 0x0

Mark.

On 4/26/23 13:33, Travis Garrison wrote:
>
> We are able to see your range from Cogent and Hurricane Electric now. 
> Just took time
>
> Routes For: 23.151.232.0/24
>
> Timestamp: 2023-04-26 11:27:07 UTC
>
>   - Prefix: 23.151.232.0/24
>
>     - RPKI State: Not Verified
>
>     - AS Path: 6939 → 23470 → 23470 → 23470 → 23470
>
>     - Next Hop: 184.105.58.113
>
>     - Weight: 170
>
>     - Local Preference: 100
>
>     - MED: 0
>
>     - Communities:
>
>     - Originator:
>
>     - Peer: 216.218.253.50
>
>     - Age: 6 hours (Wed, 26 Apr 2023 05:01:41 UTC)
>
>   - Prefix: 23.151.232.0/24
>
>     - RPKI State: Not Verified
>
>     - AS Path: 6939 → 23470 → 23470 → 23470 → 23470
>
>     - Next Hop: 184.105.92.241
>
>     - Weight: 170
>
>     - Local Preference: 100
>
>     - MED: 0
>
>     - Communities:
>
>     - Originator:
>
>     - Peer: 100.78.0.6
>
>     - Age: 6 hours (Wed, 26 Apr 2023 05:01:39 UTC)
>
>   - Prefix: 23.151.232.0/24
>
>     - RPKI State: Not Verified
>
>     - AS Path: 174 → 3257 → 23470 → 23470 → 23470 → 23470
>
>     - Next Hop: 38.140.137.161
>
>     - Weight: 170
>
>     - Local Preference: 100
>
>     - MED: 10020
>
>     - Communities:
>
>       - 174:21000
>
>       - 174:22013
>
>     - Originator:
>
>     - Peer: 66.28.1.16
>
>     - Age: 3 hours (Wed, 26 Apr 2023 08:57:05 UTC)
>
> Thanks
>
> Travis
>
> *From:* NANOG <nanog-bounces+tgarrison=netviscom.com at nanog.org> *On 
> Behalf Of *August Yang via NANOG
> *Sent:* Tuesday, April 25, 2023 9:54 PM
> *To:* Ryan Hamel <ryan at rkhtech.org>; Neel Chauhan <neel at neelc.org>; 
> nanog at nanog.org
> *Subject:* Re: IPv4 Subnet 23.151.232.0/24 blackholed?
>
> The range has only been announced for 2 hours. Just wait longer for 
> filters to refresh as Ryan advised.
>
> On 2023-04-25 10:49 p.m., Ryan Hamel wrote:
>
>     Neel,
>
>     Carriers rebuild their prefixes lists once or twice in a 24 hour
>     period. Considering that you just got the block today and is in
>     ReliableSite's AS-SET, you just got to be patient.
>
>     Having announcements propagated immediately either sounds like it
>     happened a day after you gave them the LOA, or they have
>     unfiltered transit circuits, which is worrisome.
>
>     Ryan
>
>     ------ Original Message ------
>     From "Neel Chauhan" <neel at neelc.org> <mailto:neel at neelc.org>
>     To nanog at nanog.org
>     Date 4/25/2023 7:35:40 PM
>     Subject IPv4 Subnet 23.151.232.0/24 blackholed?
>
>
>         Hi,
>
>         I recently got the IPv4 allocation 23.151.232.0/24 from ARIN.
>         I also had my hosting company ReliableSite announce it to the
>         internet.
>
>         Right now, I can only access networks that peer with
>         ReliableSite via internet exchanges, such as Google,
>         CloudFlare, OVH, Hurricane Electric, et al.
>
>         It seems the Tier 1 ISPs (e.g. Lumen, Cogent, AT&T, et al.)
>         are blackholing the IPv4 subnet 23.151.232.0/24. Could someone
>         who works at a Tier 1 NOC please check and remove the
>         blackhole if any exists?
>
>         Normally when ReliableSite announced my prior (then-leased)
>         IPv4 space it gets propagated via BGP almost immediately. This
>         time it's not going through at all.
>
>         Best,
>
>         Neel Chauhan
>
> -- 
> Best regards
> August Yang
>
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