ip neighborsdirectory What the mail shows
80 other senders have been seen on at least one of these IPs, though none matches the full pool.
80
Other companies on them
Who else sends from these IPs and 40 more.
The Klaviyo pool this sits in · 9 brands · 29 addresses These senders draw from near-identical sets of addresses, which is what sharing a pool means. Klaviyo publishes none of this. See every pool we have recovered .
The IPs, by how much of this mail each carried 18 of ~26 IPs seen. Klaviyo assigns a different IP per send, so this is the set drawn from, not an address. The spread is close to even, which is what per-send rotation normally looks like.
Sending over time Stable in our sample: the same 18 addresses from first to last sighting, 11 months.
EACH ROW IS ONE ADDRESS, OLDEST FIRST · BAR = IN THE POOL · DARKER = MORE CAMPAIGNS 170.203.24.36 170.203.24.36 · kl-203-24-36 · carried this mail 4 Sept 25 to now · 6 campaigns 170.203.24.36 · week of 04/09/2025 · 1 campaign 170.203.24.36 · week of 18/12/2025 · 1 campaign 170.203.24.36 · week of 15/01/2026 · 1 campaign 170.203.24.36 · week of 19/02/2026 · 2 campaigns 170.203.24.36 · week of 11/06/2026 · 1 campaign 6 170.203.20.21 170.203.20.21 · kl-203-20-21 · carried this mail 2 Oct 25 to now · 7 campaigns 170.203.20.21 · week of 02/10/2025 · 1 campaign 170.203.20.21 · week of 09/10/2025 · 2 campaigns 170.203.20.21 · week of 27/11/2025 · 1 campaign 170.203.20.21 · week of 11/12/2025 · 1 campaign 170.203.20.21 · week of 15/01/2026 · 1 campaign 170.203.20.21 · week of 04/06/2026 · 1 campaign 7 170.203.16.7 170.203.16.7 · kl-203-16-7 · carried this mail 9 Oct 25 to now · 5 campaigns 170.203.16.7 · week of 09/10/2025 · 1 campaign 170.203.16.7 · week of 06/11/2025 · 1 campaign 170.203.16.7 · week of 20/11/2025 · 1 campaign 170.203.16.7 · week of 19/03/2026 · 1 campaign 170.203.16.7 · week of 11/06/2026 · 1 campaign 5 170.203.24.6 170.203.24.6 · kl-203-24-6 · carried this mail 23 Oct 25 to now · 8 campaigns 170.203.24.6 · week of 23/10/2025 · 1 campaign 170.203.24.6 · week of 30/10/2025 · 1 campaign 170.203.24.6 · week of 20/11/2025 · 1 campaign 170.203.24.6 · week of 27/11/2025 · 1 campaign 170.203.24.6 · week of 29/01/2026 · 1 campaign 170.203.24.6 · week of 12/02/2026 · 1 campaign 170.203.24.6 · week of 25/06/2026 · 1 campaign 170.203.24.6 · week of 02/07/2026 · 1 campaign 8 170.203.20.5 170.203.20.5 · kl-203-20-5 · carried this mail 6 Nov 25 to now · 7 campaigns 170.203.20.5 · week of 06/11/2025 · 1 campaign 170.203.20.5 · week of 20/11/2025 · 1 campaign 170.203.20.5 · week of 18/12/2025 · 1 campaign 170.203.20.5 · week of 26/02/2026 · 1 campaign 170.203.20.5 · week of 19/03/2026 · 1 campaign 170.203.20.5 · week of 09/04/2026 · 1 campaign 170.203.20.5 · week of 07/05/2026 · 1 campaign 7 170.203.28.1 170.203.28.1 · kl-203-28-1 · carried this mail 13 Nov 25 to now · 8 campaigns 170.203.28.1 · week of 13/11/2025 · 1 campaign 170.203.28.1 · week of 11/12/2025 · 1 campaign 170.203.28.1 · week of 01/01/2026 · 1 campaign 170.203.28.1 · week of 08/01/2026 · 1 campaign 170.203.28.1 · week of 22/01/2026 · 1 campaign 170.203.28.1 · week of 05/02/2026 · 1 campaign 170.203.28.1 · week of 11/06/2026 · 2 campaigns 8 170.203.28.201 170.203.28.201 · kl-203-28-201 · carried this mail 27 Nov 25 to now · 7 campaigns 170.203.28.201 · week of 27/11/2025 · 1 campaign 170.203.28.201 · week of 04/12/2025 · 1 campaign 170.203.28.201 · week of 18/12/2025 · 1 campaign 170.203.28.201 · week of 05/03/2026 · 1 campaign 170.203.28.201 · week of 12/03/2026 · 2 campaigns 170.203.28.201 · week of 26/03/2026 · 1 campaign 7 170.203.16.21 170.203.16.21 · kl-203-16-21 · carried this mail 27 Nov 25 to now · 4 campaigns 170.203.16.21 · week of 27/11/2025 · 1 campaign 170.203.16.21 · week of 19/03/2026 · 1 campaign 170.203.16.21 · week of 16/04/2026 · 1 campaign 170.203.16.21 · week of 14/05/2026 · 1 campaign 4 170.203.16.6 170.203.16.6 · kl-203-16-6 · carried this mail 27 Nov 25 to now · 5 campaigns 170.203.16.6 · week of 27/11/2025 · 2 campaigns 170.203.16.6 · week of 12/02/2026 · 1 campaign 170.203.16.6 · week of 19/02/2026 · 1 campaign 170.203.16.6 · week of 04/06/2026 · 1 campaign 5 170.203.28.6 170.203.28.6 · kl-203-28-6 · carried this mail 11 Dec 25 to now · 5 campaigns 170.203.28.6 · week of 11/12/2025 · 1 campaign 170.203.28.6 · week of 01/01/2026 · 1 campaign 170.203.28.6 · week of 29/01/2026 · 1 campaign 170.203.28.6 · week of 26/02/2026 · 1 campaign 170.203.28.6 · week of 21/05/2026 · 1 campaign 5 170.203.19.129 170.203.19.129 · kl-203-19-129 · carried this mail 11 Dec 25 to now · 9 campaigns 170.203.19.129 · week of 11/12/2025 · 1 campaign 170.203.19.129 · week of 25/12/2025 · 1 campaign 170.203.19.129 · week of 01/01/2026 · 1 campaign 170.203.19.129 · week of 22/01/2026 · 1 campaign 170.203.19.129 · week of 05/02/2026 · 1 campaign 170.203.19.129 · week of 05/03/2026 · 1 campaign 170.203.19.129 · week of 02/04/2026 · 1 campaign 170.203.19.129 · week of 18/06/2026 · 1 campaign 170.203.19.129 · week of 02/07/2026 · 1 campaign 9 170.203.24.5 170.203.24.5 · kl-203-24-5 · carried this mail 8 Jan 26 to now · 5 campaigns 170.203.24.5 · week of 08/01/2026 · 1 campaign 170.203.24.5 · week of 22/01/2026 · 1 campaign 170.203.24.5 · week of 26/02/2026 · 1 campaign 170.203.24.5 · week of 11/06/2026 · 1 campaign 170.203.24.5 · week of 25/06/2026 · 1 campaign 5 198.37.147.189 198.37.147.189 · o1381 · carried this mail 29 Jan 26 to now · 4 campaigns 198.37.147.189 · week of 29/01/2026 · 1 campaign 198.37.147.189 · week of 12/02/2026 · 1 campaign 198.37.147.189 · week of 18/06/2026 · 1 campaign 198.37.147.189 · week of 09/07/2026 · 1 campaign 4 170.203.20.6 170.203.20.6 · kl-203-20-6 · carried this mail 5 Feb 26 to now · 2 campaigns 170.203.20.6 · week of 05/02/2026 · 1 campaign 170.203.20.6 · week of 16/04/2026 · 1 campaign 2 149.72.196.98 149.72.196.98 · o1380 · carried this mail 5 Mar 26 to now · 1 campaigns 149.72.196.98 · week of 05/03/2026 · 1 campaign 1 170.203.23.144 170.203.23.144 · kl-203-23-144 · carried this mail 26 Mar 26 to now · 1 campaigns 170.203.23.144 · week of 26/03/2026 · 1 campaign 1 149.72.148.64 149.72.148.64 · o1410 · carried this mail 11 Jun 26 to now · 1 campaigns 149.72.148.64 · week of 11/06/2026 · 1 campaign 1 141.109.250.3 141.109.250.3 · carried this mail 16 Jul 26 to now · 1 campaigns 141.109.250.3 · week of 16/07/2026 · 1 campaign 1 Sept 25 Oct 25 Dec 25 Feb 26 Apr 26 Jun 26
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How this was measured
Panel mailboxes subscribe to public newsletters. Every message carries the IP that delivered it in its Received: headers, which is how the pairing of brand to IP is established. Nothing here is modelled or inferred.
Published: which IP carried which brand's mail, by day. Not published: how much anyone sends, when exactly, or where their mail landed. Adjacency is a fact about shared infrastructure; performance belongs to the sender.
A brand that would rather not appear here is removed on request, same day.