ip neighborsdirectory What the mail shows
23 other senders have been seen on at least one of these IPs, though none matches the full pool.
23
Other companies on them
Who else sends from these IPs The Klaviyo pool this sits in · 5 brands · 27 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 15 of ~15 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 1 address first appeared mid-window and none stopped appearing. In a sampled panel that is usually sampling, not movement; the real answer needs your DMARC reports.
EACH ROW IS ONE ADDRESS, OLDEST FIRST · BAR = IN THE POOL · DARKER = MORE CAMPAIGNS 170.203.20.12 170.203.20.12 · kl-203-20-12 · carried this mail 23 Oct 25 to now · 13 campaigns 170.203.20.12 · week of 23/10/2025 · 1 campaign 170.203.20.12 · week of 27/11/2025 · 1 campaign 170.203.20.12 · week of 01/01/2026 · 1 campaign 170.203.20.12 · week of 15/01/2026 · 2 campaigns 170.203.20.12 · week of 12/02/2026 · 1 campaign 170.203.20.12 · week of 05/03/2026 · 1 campaign 170.203.20.12 · week of 12/03/2026 · 1 campaign 170.203.20.12 · week of 19/03/2026 · 1 campaign 170.203.20.12 · week of 26/03/2026 · 1 campaign 170.203.20.12 · week of 02/04/2026 · 1 campaign 170.203.20.12 · week of 09/04/2026 · 1 campaign 170.203.20.12 · week of 16/04/2026 · 1 campaign 13 170.203.20.2 170.203.20.2 · kl-203-20-2 · carried this mail 23 Oct 25 to now · 11 campaigns 170.203.20.2 · week of 23/10/2025 · 1 campaign 170.203.20.2 · week of 27/11/2025 · 1 campaign 170.203.20.2 · week of 11/12/2025 · 1 campaign 170.203.20.2 · week of 05/02/2026 · 1 campaign 170.203.20.2 · week of 26/02/2026 · 1 campaign 170.203.20.2 · week of 05/03/2026 · 2 campaigns 170.203.20.2 · week of 12/03/2026 · 1 campaign 170.203.20.2 · week of 19/03/2026 · 1 campaign 170.203.20.2 · week of 16/04/2026 · 2 campaigns 11 170.203.31.162 170.203.31.162 · kl-203-31-162 · carried this mail 30 Oct 25 to now · 17 campaigns 170.203.31.162 · week of 30/10/2025 · 3 campaigns 170.203.31.162 · week of 27/11/2025 · 2 campaigns 170.203.31.162 · week of 25/12/2025 · 3 campaigns 170.203.31.162 · week of 01/01/2026 · 1 campaign 170.203.31.162 · week of 15/01/2026 · 1 campaign 170.203.31.162 · week of 22/01/2026 · 2 campaigns 170.203.31.162 · week of 19/02/2026 · 2 campaigns 170.203.31.162 · week of 26/02/2026 · 1 campaign 170.203.31.162 · week of 05/03/2026 · 1 campaign 170.203.31.162 · week of 09/04/2026 · 1 campaign 17 170.203.27.80 170.203.27.80 · kl-203-27-80 · carried this mail 30 Oct 25 to now · 13 campaigns 170.203.27.80 · week of 30/10/2025 · 1 campaign 170.203.27.80 · week of 04/12/2025 · 1 campaign 170.203.27.80 · week of 11/12/2025 · 1 campaign 170.203.27.80 · week of 18/12/2025 · 2 campaigns 170.203.27.80 · week of 25/12/2025 · 1 campaign 170.203.27.80 · week of 15/01/2026 · 1 campaign 170.203.27.80 · week of 29/01/2026 · 1 campaign 170.203.27.80 · week of 12/03/2026 · 1 campaign 170.203.27.80 · week of 19/03/2026 · 1 campaign 170.203.27.80 · week of 26/03/2026 · 1 campaign 170.203.27.80 · week of 02/04/2026 · 1 campaign 170.203.27.80 · week of 09/04/2026 · 1 campaign 13 170.203.20.221 170.203.20.221 · kl-203-20-221 · carried this mail 30 Oct 25 to now · 10 campaigns 170.203.20.221 · week of 30/10/2025 · 1 campaign 170.203.20.221 · week of 04/12/2025 · 1 campaign 170.203.20.221 · week of 01/01/2026 · 1 campaign 170.203.20.221 · week of 08/01/2026 · 2 campaigns 170.203.20.221 · week of 12/02/2026 · 1 campaign 170.203.20.221 · week of 19/02/2026 · 1 campaign 170.203.20.221 · week of 19/03/2026 · 1 campaign 170.203.20.221 · week of 02/04/2026 · 1 campaign 170.203.20.221 · week of 09/04/2026 · 1 campaign 10 170.203.28.28 170.203.28.28 · kl-203-28-28 · carried this mail 30 Oct 25 to now · 18 campaigns 170.203.28.28 · week of 30/10/2025 · 1 campaign 170.203.28.28 · week of 27/11/2025 · 1 campaign 170.203.28.28 · week of 18/12/2025 · 1 campaign 170.203.28.28 · week of 25/12/2025 · 1 campaign 170.203.28.28 · week of 01/01/2026 · 2 campaigns 170.203.28.28 · week of 22/01/2026 · 1 campaign 170.203.28.28 · week of 29/01/2026 · 2 campaigns 170.203.28.28 · week of 26/02/2026 · 2 campaigns 170.203.28.28 · week of 12/03/2026 · 1 campaign 170.203.28.28 · week of 19/03/2026 · 1 campaign 170.203.28.28 · week of 02/04/2026 · 1 campaign 170.203.28.28 · week of 09/04/2026 · 2 campaigns 170.203.28.28 · week of 23/04/2026 · 2 campaigns 18 170.203.24.12 170.203.24.12 · kl-203-24-12 · carried this mail 30 Oct 25 to now · 15 campaigns 170.203.24.12 · week of 30/10/2025 · 2 campaigns 170.203.24.12 · week of 25/12/2025 · 2 campaigns 170.203.24.12 · week of 08/01/2026 · 1 campaign 170.203.24.12 · week of 22/01/2026 · 1 campaign 170.203.24.12 · week of 05/02/2026 · 1 campaign 170.203.24.12 · week of 12/02/2026 · 1 campaign 170.203.24.12 · week of 12/03/2026 · 2 campaigns 170.203.24.12 · week of 19/03/2026 · 2 campaigns 170.203.24.12 · week of 02/04/2026 · 1 campaign 170.203.24.12 · week of 16/04/2026 · 1 campaign 170.203.24.12 · week of 23/04/2026 · 1 campaign 15 170.203.16.51 170.203.16.51 · kl-203-16-51 · carried this mail 30 Oct 25 to now · 13 campaigns 170.203.16.51 · week of 30/10/2025 · 1 campaign 170.203.16.51 · week of 27/11/2025 · 2 campaigns 170.203.16.51 · week of 18/12/2025 · 1 campaign 170.203.16.51 · week of 08/01/2026 · 1 campaign 170.203.16.51 · week of 15/01/2026 · 2 campaigns 170.203.16.51 · week of 29/01/2026 · 1 campaign 170.203.16.51 · week of 05/02/2026 · 1 campaign 170.203.16.51 · week of 12/02/2026 · 1 campaign 170.203.16.51 · week of 19/02/2026 · 1 campaign 170.203.16.51 · week of 12/03/2026 · 1 campaign 170.203.16.51 · week of 23/04/2026 · 1 campaign 13 170.203.16.15 170.203.16.15 · kl-203-16-15 · carried this mail 27 Nov 25 to now · 15 campaigns 170.203.16.15 · week of 27/11/2025 · 1 campaign 170.203.16.15 · week of 25/12/2025 · 1 campaign 170.203.16.15 · week of 15/01/2026 · 3 campaigns 170.203.16.15 · week of 22/01/2026 · 1 campaign 170.203.16.15 · week of 29/01/2026 · 3 campaigns 170.203.16.15 · week of 12/02/2026 · 1 campaign 170.203.16.15 · week of 19/02/2026 · 1 campaign 170.203.16.15 · week of 12/03/2026 · 2 campaigns 170.203.16.15 · week of 19/03/2026 · 1 campaign 170.203.16.15 · week of 26/03/2026 · 1 campaign 15 170.203.24.10 170.203.24.10 · kl-203-24-10 · carried this mail 27 Nov 25 to now · 13 campaigns 170.203.24.10 · week of 27/11/2025 · 2 campaigns 170.203.24.10 · week of 18/12/2025 · 1 campaign 170.203.24.10 · week of 25/12/2025 · 1 campaign 170.203.24.10 · week of 08/01/2026 · 1 campaign 170.203.24.10 · week of 05/02/2026 · 1 campaign 170.203.24.10 · week of 12/02/2026 · 2 campaigns 170.203.24.10 · week of 26/02/2026 · 1 campaign 170.203.24.10 · week of 26/03/2026 · 3 campaigns 170.203.24.10 · week of 02/04/2026 · 1 campaign 13 170.203.28.37 170.203.28.37 · kl-203-28-37 · carried this mail 27 Nov 25 to now · 15 campaigns 170.203.28.37 · week of 27/11/2025 · 1 campaign 170.203.28.37 · week of 04/12/2025 · 1 campaign 170.203.28.37 · week of 08/01/2026 · 1 campaign 170.203.28.37 · week of 22/01/2026 · 1 campaign 170.203.28.37 · week of 05/02/2026 · 3 campaigns 170.203.28.37 · week of 26/02/2026 · 1 campaign 170.203.28.37 · week of 05/03/2026 · 1 campaign 170.203.28.37 · week of 12/03/2026 · 2 campaigns 170.203.28.37 · week of 02/04/2026 · 1 campaign 170.203.28.37 · week of 09/04/2026 · 2 campaigns 170.203.28.37 · week of 16/04/2026 · 1 campaign 15 170.203.20.51 170.203.20.51 · kl-203-20-51 · carried this mail 27 Nov 25 to now · 12 campaigns 170.203.20.51 · week of 27/11/2025 · 1 campaign 170.203.20.51 · week of 08/01/2026 · 1 campaign 170.203.20.51 · week of 15/01/2026 · 1 campaign 170.203.20.51 · week of 22/01/2026 · 1 campaign 170.203.20.51 · week of 19/02/2026 · 2 campaigns 170.203.20.51 · week of 19/03/2026 · 1 campaign 170.203.20.51 · week of 26/03/2026 · 1 campaign 170.203.20.51 · week of 09/04/2026 · 2 campaigns 170.203.20.51 · week of 16/04/2026 · 1 campaign 170.203.20.51 · week of 23/04/2026 · 1 campaign 12 170.203.28.36 170.203.28.36 · kl-203-28-36 · carried this mail 27 Nov 25 to now · 12 campaigns 170.203.28.36 · week of 27/11/2025 · 1 campaign 170.203.28.36 · week of 25/12/2025 · 1 campaign 170.203.28.36 · week of 01/01/2026 · 1 campaign 170.203.28.36 · week of 08/01/2026 · 1 campaign 170.203.28.36 · week of 29/01/2026 · 3 campaigns 170.203.28.36 · week of 12/02/2026 · 1 campaign 170.203.28.36 · week of 09/04/2026 · 2 campaigns 170.203.28.36 · week of 16/04/2026 · 1 campaign 170.203.28.36 · week of 23/04/2026 · 1 campaign 12 170.203.16.2 170.203.16.2 · kl-203-16-2 · carried this mail 11 Dec 25 to now · 13 campaigns 170.203.16.2 · week of 11/12/2025 · 2 campaigns 170.203.16.2 · week of 18/12/2025 · 1 campaign 170.203.16.2 · week of 25/12/2025 · 1 campaign 170.203.16.2 · week of 01/01/2026 · 1 campaign 170.203.16.2 · week of 15/01/2026 · 2 campaigns 170.203.16.2 · week of 22/01/2026 · 1 campaign 170.203.16.2 · week of 29/01/2026 · 1 campaign 170.203.16.2 · week of 05/02/2026 · 1 campaign 170.203.16.2 · week of 12/02/2026 · 1 campaign 170.203.16.2 · week of 05/03/2026 · 1 campaign 170.203.16.2 · week of 09/04/2026 · 1 campaign 13 170.203.24.2 170.203.24.2 · kl-203-24-2 · carried this mail 15 Jan 26 to now · 13 campaigns 170.203.24.2 · week of 15/01/2026 · 1 campaign 170.203.24.2 · week of 29/01/2026 · 2 campaigns 170.203.24.2 · week of 12/02/2026 · 1 campaign 170.203.24.2 · week of 26/02/2026 · 1 campaign 170.203.24.2 · week of 05/03/2026 · 1 campaign 170.203.24.2 · week of 19/03/2026 · 2 campaigns 170.203.24.2 · week of 02/04/2026 · 2 campaigns 170.203.24.2 · week of 09/04/2026 · 2 campaigns 170.203.24.2 · week of 16/04/2026 · 1 campaign 13 Oct 25 Nov 25 Jan 26 Feb 26 Mar 26 Apr 26
Is this your domain? This page is built from mail we received, so it is a sample. Verify the domain and you get the complete pool from your own DMARC reports, plus an email the day the pool changes.
Check a campaign of yours The complete version of this page, every address from your DMARC with dated moves and a written verdict, is the pool audit . Read a sample report .
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.