ProxyEmpire and MarsProxies both offer non-expiring PAYG residential billing — purchased bandwidth does not expire at billing cycle boundaries on either platform. Both serve mid-market scraping teams without compliance certifications. The operational profiles diverge on two specific dimensions: ProxyEmpire on ASN residential targeting and indefinite data permanence, MarsProxies on sub-second session granularity and ISP uptime guarantees.

ProxyEmpire documents ASN, city, and ISP targeting on rotating residential proxies at no extra cost, with bandwidth that never expires even after a subscription lapses. MarsProxies offers sticky sessions from 1 second to 7 days and ISP proxies backed by 99.99% uptime and guaranteed failed IP replacement.

Both offer non-expiring data. The comparison turns on ASN residential targeting and post-lapse data permanence versus sub-second session control and ISP reliability guarantees.

ProxyEmpire suits teams that need ASN targeting on residential proxies, data that never expires even after subscription lapses, or VIP setup support at every plan tier. The limitations: sticky sessions cap at 60 minutes, rotation interval changes require support contact, pool at 30M+, no compliance certifications.

MarsProxies suits teams that need sticky sessions from 1 second to 7 days, ISP proxies with 99.99% uptime and guaranteed failed IP replacement, and the residential workload fits within a 1M+ pool. Both offer non-expiring PAYG. The limitations: pool small for high-volume use, ASN targeting not documented, no compliance certifications, no free trial.

ProxyEmpire's philosophy is that purchased proxy bandwidth should retain its value indefinitely — not just across billing cycles but after a subscription lapses entirely. ASN targeting at no extra cost extends routing precision to network-operator level. VIP setup support with every plan ensures onboarding is not tiered. Rotation intervals from 1 to 60 minutes are available via support contact.

MarsProxies' philosophy is that session control precision and ISP reliability are underserved. Sticky sessions from 1 second to 7 days cover the full timing spectrum. ISP proxies with 99.99% uptime and guaranteed replacement deliver predictable availability without manual monitoring. Non-expiring PAYG removes billing-cycle pressure.

You gain ASN residential targeting and indefinite data permanence with ProxyEmpire. You give up sub-second session granularity and ISP uptime guarantees. With MarsProxies, the trade runs in reverse — you gain session precision and ISP reliability, and ASN targeting, post-lapse data permanence, and VIP setup support become unavailable.

ProxyEmpire's rotating residential pool is provider-reported at 30M+ IPs across 170+ countries. Country, region, city, ISP, and ASN targeting confirmed at no extra cost. Sticky sessions cap at 60 minutes with average 15-minute duration. Rotation intervals 1 to 60 minutes via support contact. Mobile proxies 5M+ IPs across 170+ countries with carrier targeting. Static residential in 21 listed countries; country-level targeting only.

MarsProxies' residential pool is provider-reported at 1M+ IPs across 195 countries. Country, state, and city targeting confirmed. ASN targeting not documented. Sticky sessions configurable from 1 second to 7 days — finest granularity in this set. Mobile rotation-only; sticky not available on mobile. ISP proxies in 30+ countries with 99.99% uptime and guaranteed failed IP replacement — dedicated, non-shared. Datacenter dedicated only with failed IP replacement.

ProxyEmpire includes VIP setup support with every plan. HTTP/S and SOCKS5 confirmed; UDP not documented. Rotation interval configurable 1 to 60 minutes via support contact — self-service not documented. API endpoints referenced but rate limits and full documentation not published.

MarsProxies supports username and password and IP whitelist authentication. Session duration from 1 second to 7 days configured directly without support contact. HTTP/S and SOCKS5 confirmed; UDP not documented. 24/7 support via live chat, email, and Discord. No published response time SLA.

ProxyEmpire bills rotating residential per GB with indefinite data rollover — bandwidth does not expire even after subscription lapses. Low-cost trial available. No free tier. Rollover terms for mobile and static residential should be verified before committing.

MarsProxies bills residential per GB on non-expiring PAYG with bulk discounts. No monthly commitment. No free trial — minimum 1 GB purchase. Crypto payments accepted. ISP and datacenter billed per IP. Mobile billed per device on flexible lease terms.

ASN targeting on residential proxies, data that never expires even after subscription lapses, or VIP setup support at every plan tier are priorities. ProxyEmpire fits.

Sticky sessions from 1 second to 7 days, ISP proxies with 99.99% uptime and replacement guarantee, and the residential workload fits within 1M+ IPs. MarsProxies fits.

You gain ASN targeting and indefinite data permanence with ProxyEmpire. You give up sub-second session granularity and ISP reliability guarantees. With MarsProxies, the trade runs in reverse — you gain session precision and ISP reliability, and ASN targeting and post-lapse data permanence become unavailable.

Neither holds compliance certifications — teams with those requirements should look elsewhere in this set.

Ask whether ASN-level routing on residential proxies is a hard requirement — or whether your proxy usage involves long inactive periods where post-lapse data permanence matters. If yes, ProxyEmpire's ASN targeting and indefinite rollover address those priorities, and the 60-minute session ceiling is the constraint.

Ask whether your scraping workflow depends on controlling session duration to the second — or whether ISP proxies with a documented uptime commitment are the priority. If yes, and the 1M+ pool fits, MarsProxies' session granularity and ISP reliability are the fit.

If your requirement is ASN targeting and indefinite data permanence — ProxyEmpire. If your requirement is session precision and ISP reliability — MarsProxies.