Decodo and MarsProxies target different operational priorities without much overlap. Decodo is built for teams that need independently verified compliance credentials and a large residential pool with mobile ASN depth. MarsProxies is built for teams that need precise session duration control and ISP proxies with a documented uptime commitment.

Decodo holds ISO 27001:2022 and EWDCI co-founder status, operates a 115M+ residential pool with ZIP and coordinate targeting, and documents 700+ ASNs on its mobile network. MarsProxies offers sticky sessions configurable from 1 second to 7 days — the widest documented TTL range in this comparison set — ISP proxies with 99.99% uptime and guaranteed failed IP replacement, and non-expiring PAYG residential traffic. Its residential pool is provider-reported at 1M+.

The pool gap alone separates most use cases. What remains is a choice between compliance credentials with mobile precision, or session control granularity with ISP reliability.

Decodo suits teams whose procurement requires ISO 27001 and EWDCI co-founder credentials — or whose workloads need a residential pool large enough for high-volume scraping, mobile carrier and ASN targeting across 700+ ASNs, or ZIP targeting. A 14-day money-back guarantee and uncapped PAYG reduce entry risk. The limitation: ASN targeting on residential proxies is not documented.

MarsProxies suits teams that need sticky sessions configurable to the second — from 1 second to 7 days — without scale requirements that make Decodo's pool necessary. ISP proxies include 99.99% uptime and guaranteed failed IP replacement. Non-expiring PAYG requires no commitment. The limitations: the 1M+ residential pool is unsuitable for high-volume workloads, ASN targeting is not documented, and no independent compliance certifications exist.

Decodo's philosophy is that compliance credentials and mobile network precision should be accessible and independently verifiable. ISO 27001:2022 and EWDCI co-founder status are named certifications. The mobile network with 700+ ASNs addresses precision requirements beyond country level. The 14-day money-back guarantee and uncapped PAYG reduce the risk of committing to the wrong provider.

MarsProxies' philosophy is that session control precision and ISP reliability are the variables proxy teams most often cannot configure. Sticky sessions from 1 second to 7 days cover workloads across the full timing spectrum without workarounds. ISP proxies with 99.99% uptime and guaranteed replacement deliver static proxy reliability without the operational overhead of monitoring and manually replacing failed IPs.

You gain compliance credentials, pool scale, and mobile ASN depth with Decodo. You give up sub-minute session control and ISP reliability guarantees. With MarsProxies, the trade runs in reverse — you gain session precision and ISP reliability commitments, and the compliance credentials, residential scale, and mobile ASN depth become unavailable.

Decodo's residential pool is provider-reported at 115M+ IPs across 195+ countries. Residential proxies support country, region, city, ZIP, and coordinate targeting. ASN targeting on residential proxies is not documented. Mobile proxies cover 10M+ IPs across 160+ countries and 700+ ASNs with carrier targeting confirmed. Sticky sessions are configurable up to 24 hours. Dedicated residential IPs are not offered.

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

Decodo authenticates via username and password with IP whitelist also supported. Targeting is configured via proxy username parameters. REST API covers zone management and usage statistics. Sub-user accounts available. KYC with automated fraud checks applies to all customers.

MarsProxies supports username and password and IP whitelist authentication. Session duration from 1 second to 7 days is 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. Sub-user management not documented.

Decodo bills residential proxies per GB on PAYG and subscription tiers. PAYG has no published cap. A 3-day trial and 14-day money-back guarantee are available. A pricing inconsistency between the pricing grid and billing FAQ is documented — verify rate before committing.

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

ISO 27001 and EWDCI co-founder credentials, a pool suitable for high-volume scraping, mobile 700+ ASN targeting, or ZIP targeting are requirements. Decodo fits.

Sticky sessions configurable to the second from 1 second to 7 days, ISP proxies with 99.99% uptime and replacement guarantee, and non-expiring PAYG are the priorities — and the workload fits within a 1M+ pool. MarsProxies fits.

You gain compliance credentials, pool scale, and mobile ASN depth with Decodo. You give up session precision and ISP reliability guarantees. With MarsProxies, the trade runs in reverse — you gain session granularity and ISP reliability, and the compliance credentials, residential scale, and mobile ASN depth become unavailable.

Neither fits teams that need both large residential pool depth and sub-minute sticky session control.

Ask whether your workload generates enough requests that a 1M+ residential pool creates IP repetition problems — or whether compliance credentials or mobile ASN targeting are procurement requirements. If yes, Decodo's pool scale and ISO certification are the fit.

Ask whether your scraping workflow depends on controlling session duration to the second — or whether ISP static proxies with a documented uptime commitment are the operational priority. If yes, and your workload fits within 1M+ IPs, MarsProxies' session granularity and ISP reliability address those needs directly.

If your requirement is compliance credentials and pool scale — Decodo. If your requirement is session precision and ISP reliability — MarsProxies.