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Tracked since 2026
The Bottom Line
- Price
- From $19/mo (free plan available). Compare plans
Key facts
- Free MAC address lookup via web and API with a set number of monthly API calls at no cost.
- Each result explains randomization confidence, IEEE 802c classification, and derived IPv6 address.
- Available as a hosted API or self-hosted binary for air-gapped or compliance-sensitive environments.
Pros
- Explains the reasoning behind each result in plain English
- Flags randomized MAC addresses to help detect privacy-related spoofing
- Free tier includes a real API key instantly without approval delays
Cons
- Free API limited to a set number of lookups per month; paid plans needed for moderate usage
- Self-hosted license has a price that may be costly for small teams
What is macadress?
macadress.com is a MAC address lookup tool that goes beyond simply returning a vendor name. It provides detailed technical analysis including IEEE assignment type, block range, country, address administration type, transmission type, and randomization confidence. The web tool is free and requires no account, while the API offers a generous number of free lookups per month with paid plans for higher volume. A self-hosted version is available for environments that require lookups to stay on-premise.
The service syncs with IEEE's MA-L, MA-M, MA-S, IAB, and CID registries on a recurring schedule to ensure accuracy. Every result includes plain-English explanations of the address's bits, derived EUI-64 and IPv6 link-local addresses, and indicators of whether the address may be randomized. Built by developers for developers, the API returns full response fields on every plan, paid tiers only buy more requests per minute and monthly lookup capacity, not feature depth.
Louis Corneloup Source macadress.com ↗
Key Features
- Free web-based MAC address lookup with no account required
- REST API with 1,000 free lookups/month (no credit card needed)
- Detailed results: vendor, country, block range, address capacity, transmission type, administration type
- Randomization detection with confidence indicator
- IEEE 802c SLAP quadrant classification and EUI-64/IPv6 link-local derivation
- Batch endpoint supporting up to 100 addresses per request
- Self-hosted deployment option licensed per deployment
- Recurring IEEE registry sync for up-to-date vendor data
Pricing Plans
Free TrialPricing checked Oct 8, 2026
| Plan | Price | Details |
|---|---|---|
| Free | $0 / month |
+2 more Show less
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| Growth | $19 / month |
+2 more Show less
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| Scale | $79 / month |
+2 more Show less
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| Self-hosted | Starting at $999/year per deployment |
+1 more Show less
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Is macadress worth the price?
Good value
The pricing is fair and generous, with a strong free tier offering 1,000 lookups per month and full response fields.
The Growth tier at $19/month is excellent value for small teams needing 100,000 lookups, while the Scale tier at $79/month is reasonable for high-volume use. The self-hosted option at $999/year is ideal for compliance-sensitive environments, though it requires an annual commitment.
Best for developers, small businesses, and enterprises with strict data residency needs.
Hidden Costs & Gotchas
Overage grace pauses service until renewal
Self-hosted is annual-only, no monthly option
No overage charges but service interruption
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macadress FAQ
How does macadress help detect randomized MAC addresses for security analysis?
macadress returns a randomization confidence indicator for each MAC address, flagging addresses that may be randomized to help detect privacy-related spoofing. This feature is useful for security teams monitoring network behavior and identifying potentially spoofed devices.
Which teams might find the self-hosted license cost a limitation?
Small teams with limited budgets may find the self-hosted license cost prohibitive, as it is priced for environments that require on-premise lookup capabilities. For lower-volume needs, the free API tier or paid cloud plans provide a more affordable alternative.
How is macadress's API priced?
Macadress offers a free API tier that includes a generous number of lookups per month and a real API key instantly without approval delays. Paid plans are available for higher monthly lookup capacity and more requests per minute, with no feature depth differences between tiers.
Can macadress derive IPv6 addresses from a MAC address?
Yes, macadress derives the EUI-64 identifier and IPv6 link-local address from any MAC address as part of its detailed analysis. This helps developers and network engineers quickly obtain the IPv6 address associated with a given MAC.
What kind of technical details does macadress provide beyond vendor lookup?
Macadress provides IEEE assignment type, block range, country, address administration type, and transmission type, along with plain-English explanations of the address's bits. It also includes derived EUI-64 and IPv6 link-local addresses, and a randomization confidence indicator.
What kind of user benefits most from the plain-English explanations in macadress?
Developers and network engineers benefit most from the plain-English explanations, as those explanations clarify the reasoning behind each result and make technical details accessible. The tool is built by developers for developers, but the explanations also help anyone new to MAC address analysis.
Does macadress require an account to use the web tool?
No, the web tool at macadress.com is completely free and requires no account to use. Users can look up any MAC address and receive full detailed analysis instantly without signing up.
How does macadress ensure its lookup data stays accurate?
Macadress syncs with IEEE's MA-L, MA-M, MA-S, IAB, and CID registries on a recurring schedule to ensure accuracy. This regular update cycle keeps the vendor and assignment data current and reliable.
Source: macadress.com