Best Mobile Phone Number Providers Compared to ZoomInfo and Apollo

Leighton H. · 2026-01-14T17:45:22.667Z

Hi all - does anyone have a suggestion for the best mobile phone number provider? ZoomInfo and Apollo and ContactOut are all generally not great

Best Mobile Phone Number Providers Compared to ZoomInfo and Apollo | RevGenius

14 comments

· Sorted by Oldest

Mike C.
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Use Mark B. upcell for sure
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Andreas L.
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Got this suggestion once, but have not used any of them yet tbh. I think Aircall is the best personally, but I never used it for SDR purposes. More for a general VOIP service for inbound and outbounds calls into and out of a general construction business. I'm currently using OpenPhone (now renamed Quo) but more for texting. I think they provide calling as well. I'd check out those two, and then Kixie as a backup.
Paris P.
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Hey Andreas, thats for cold calling, not for acquiring phone numbers 🙂
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Deepsankar
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Leadmagic (partnering with TitanX) / people data labs. To verify the numbers, use plivo/numverify api. 90-96% accuracy observed.
Arkojit K.
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TitanX is the move Leighton H.
Udi C.
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I work for Lusha so obviously i would suggest that 🙂 As part of being our own product ICP we are doing quite great stuff with it, happy to share if you like to take it offline.
Duncan M.
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Fullenrich is worth a look data is significantly better than Apollo
Leighton H.
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appreciate all the suggestions!
Rati S.
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Prospeo?
Bittu M.
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theboomerang.co, we recently started doing mobile enrichments, you’d love the quality. Test a sample list.
Jak U.
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In my experience they all are pretty much as ‘bad’ as each other on their own because they use different scraping/collection methods which never get everything . I suggest using waterfall or a combination of providers. We use ZoomInfo as a primary provider and Cognism as secondary, then if they fail we also have waterfall in Nooks
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Mike C.
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Waterfall always for the win. Many orchestration tools like Clay provide access to a slew of different cell phone providers and you'll get better data that way and more of it. Clay, for instance, uses UpCell as one of their providers. It's great. It's kind of like going to a department store and being able to buy Puma and Nike and Coach and super fancy brands and super common cheap brands, all in the same spot. That said clay is not easy to learn so just going with one good enrichment tool like Upsell would probably be the move if you don't know clay. But then let me swing in with a call out to a dope tool that is basically the same as clay, just easier to use.... AIRscale.io (Victor). All the waterfalls on their too. Leighton H.
Leighton H.
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Appreciate it Mike - I had a great talk with Mark at UpCell, we vibed and got some good shit out of the meeting. Have tried a handfull of different vendors and have API access in Clay to ZoomInfo, Apollo, and Contactout. We also use Wiza and sometimes verify on beenverified (paid subscription) and then use spydialer to hear the voicemail (hot tip for those who want to test VMs if it's the right person). Still not 100% where we need to be but feel better about it today than I did the other day I suppose. Thanks all!
❤️1
Lisa H.
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Have you checked out Hippo? I don't knwo about it but know that it and Ring Central are out there.

Mike C.
·
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Use Mark B. upcell for sure
👍2
🙌4
Andreas L.
·
·
Got this suggestion once, but have not used any of them yet tbh. I think Aircall is the best personally, but I never used it for SDR purposes. More for a general VOIP service for inbound and outbounds calls into and out of a general construction business. I'm currently using OpenPhone (now renamed Quo) but more for texting. I think they provide calling as well. I'd check out those two, and then Kixie as a backup.
Paris P.
·
·
Hey Andreas, thats for cold calling, not for acquiring phone numbers 🙂
😅1
Deepsankar
·
·
Leadmagic (partnering with TitanX) / people data labs. To verify the numbers, use plivo/numverify api. 90-96% accuracy observed.
Arkojit K.
·
·
TitanX is the move Leighton H.
Udi C.
·
·
I work for Lusha so obviously i would suggest that 🙂 As part of being our own product ICP we are doing quite great stuff with it, happy to share if you like to take it offline.
Duncan M.
·
·
Fullenrich is worth a look data is significantly better than Apollo
Leighton H.
·
·
appreciate all the suggestions!
Rati S.
·
·
Prospeo?
Bittu M.
·
·
theboomerang.co, we recently started doing mobile enrichments, you’d love the quality. Test a sample list.
Jak U.
·
·
In my experience they all are pretty much as ‘bad’ as each other on their own because they use different scraping/collection methods which never get everything . I suggest using waterfall or a combination of providers. We use ZoomInfo as a primary provider and Cognism as secondary, then if they fail we also have waterfall in Nooks
❤️1
Mike C.
·
·
Waterfall always for the win. Many orchestration tools like Clay provide access to a slew of different cell phone providers and you'll get better data that way and more of it. Clay, for instance, uses UpCell as one of their providers. It's great. It's kind of like going to a department store and being able to buy Puma and Nike and Coach and super fancy brands and super common cheap brands, all in the same spot. That said clay is not easy to learn so just going with one good enrichment tool like Upsell would probably be the move if you don't know clay. But then let me swing in with a call out to a dope tool that is basically the same as clay, just easier to use.... AIRscale.io (Victor). All the waterfalls on their too. Leighton H.
Leighton H.
·
·
Appreciate it Mike - I had a great talk with Mark at UpCell, we vibed and got some good shit out of the meeting. Have tried a handfull of different vendors and have API access in Clay to ZoomInfo, Apollo, and Contactout. We also use Wiza and sometimes verify on beenverified (paid subscription) and then use spydialer to hear the voicemail (hot tip for those who want to test VMs if it's the right person). Still not 100% where we need to be but feel better about it today than I did the other day I suppose. Thanks all!
❤️1
Lisa H.
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·
Have you checked out Hippo? I don't knwo about it but know that it and Ring Central are out there.