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API · /macaddress-api

MAC Address API

healthy 4,116 Subscribers

MAC-address (EUI-48) tooling as an API, computed locally and deterministically. The parse endpoint validates a MAC address given in any common notation — colon, hyphen, Cisco dotted or a bare run of 12 hex digits — and returns it in every standard format, split into its OUI (the first three bytes, assigned to a hardware vendor) and its NIC (the last three, device-specific) parts, plus the 48-bit integer value. The analyze endpoint reads the control bits of the first octet: the least-significant bit is the I/G bit that marks a unicast or multicast address, and the next bit is the U/L bit that marks a universally (vendor-assigned) or locally administered address, and it flags the broadcast address ff:ff:ff:ff:ff:ff. The eui64 endpoint derives the modified EUI-64 interface identifier — flipping the U/L bit and inserting FF:FE in the middle — and the resulting IPv6 link-local address (fe80::/64) used by stateless address autoconfiguration. Vendor name lookup needs the IEEE OUI registry and is not included. Everything is computed locally and deterministically, so it is instant and private. Ideal for networking, IoT, device-management, monitoring and security app developers, MAC-normalisation and IPv6 tools, and networking education. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is MAC-address tooling; for IPv4 subnetting use a subnet API and for DNS records a DNS API.

#mac-address #networking #eui-64 #ipv6 #oui #developer-tools
api.oanor.com/macaddress-api
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Machine-readable spec so AI agents can integrate this API.

/api/macaddress-api/openapi.json
/api/macaddress-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
84 ms
Server probes · 24h
Subscribers
4,116
active
Total calls
28
last 7 days
status Full status page → · 24 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 5,200 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 5,200 calls/month
  • 2 req/sec
  • Parse + analyze + EUI-64
  • No credit card
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Starter

€6.00 /month

  • 47,000 calls / month
  • 6 requests / second
  • Hard cap (429 above quota, no overage)
  • 47,000 calls/month
  • 6 req/sec
  • All formats, OUI/NIC, IPv6 link-local
  • Email support
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Pro

€15.00 /month

  • 232,000 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 232,000 calls/month
  • 15 req/sec
  • Network-management & IoT pipelines
  • Priority support
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Mega

€48.00 /month

  • 1,340,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,340,000 calls/month
  • 40 req/sec
  • Platform scale
  • Dedicated SLA
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Related APIs

Other APIs with overlapping tags.

MAC Address API

Validate, reformat and analyse MAC (EUI-48) addresses — entirely locally. The format endpoint accepts a MAC in any common notation — colon (aa:bb:cc:dd:ee:ff), hyphen (aa-bb-…), Cisco dotted (aabb.ccdd.eeff) or bare (aabbccddeeff) — and returns it in the notation you ask for plus all the others, in upper or lower case, normalising messy input into a clean canonical form. The info endpoint analyses an address: it splits the OUI (the manufacturer prefix) from the NIC portion, reports whether the address is unicast or multicast (the I/G bit) and whether it is universally or locally administered (the U/L bit), flags the broadcast address, and derives the Modified EUI-64 interface identifier and the matching IPv6 link-local address (fe80::…) per RFC 4291. Everything is computed locally and deterministically, so it is instant and private — no lookups, no third-party calls. Ideal for network automation and IPAM, switch/router and firewall tooling, device inventory and asset management, DHCP and provisioning, and IPv6 SLAAC work. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This formats and analyses the address; to look up the manufacturer behind a MAC use a MAC-vendor API.

api.oanor.com/macaddr-api

Data Transfer API

Data-transfer and bandwidth maths as an API, computed locally and deterministically. The time endpoint computes how long a file takes to transfer at a given bandwidth, time = file bits ÷ (rate × (1 − overhead)), accepting sizes in B, KB, MB, GB, TB or the binary KiB/MiB/GiB and rates in bps, Kbps, Mbps, Gbps or bytes-per-second (MB/s), with an optional protocol-overhead allowance, and returns the time in seconds, minutes, hours and a human-readable form. The bandwidth endpoint works backwards: the bandwidth needed to move a file within a target time, in bps, Mbps, Gbps and MB/s. The convert endpoint converts a data size between decimal (1 MB = 1,000,000 bytes) and binary (MiB = 1,048,576) units, or a data rate between bit-rates and byte-rates. Everything is computed locally and deterministically, so it is instant and private. Ideal for networking, cloud, backup and streaming app developers, download-time and capacity-planning tools, and dev dashboards. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is transfer time and bandwidth; for media encoding bitrate use a bitrate API.

api.oanor.com/transfer-api

WiFi Channel API

Wi-Fi channel maths as an API, computed locally and deterministically from the standard channel-numbering formulas. The channel endpoint returns the centre frequency of a Wi-Fi channel on the 2.4, 5 or 6 GHz band — the band is auto-detected from the channel number or can be given explicitly (2.4 GHz: 2407 + 5·channel, with channel 14 at 2484; 5 GHz: 5000 + 5·channel; 6 GHz: 5950 + 5·channel). The frequency endpoint does the reverse, returning the nearest channel and band for a centre frequency in MHz or GHz. The overlap endpoint reports whether two channels overlap at a chosen channel width (two channels overlap when their centre-frequency separation is less than the width) and gives the recommended non-overlapping set — the classic 1, 6 and 11 on 2.4 GHz at 20 MHz. Everything is computed locally and deterministically, so it is instant and private. Channel availability is regulated and varies by country. Ideal for networking and Wi-Fi tools, site-survey and IoT apps, and router and access-point configuration software. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is Wi-Fi channel mapping; for general wavelength/frequency and photon energy use a wavelength API.

api.oanor.com/wifichannel-api

DNS Propagation API

Check DNS propagation by querying a record across several major public resolvers at once — Google (8.8.8.8), Cloudflare (1.1.1.1), AdGuard and dns.sb — and seeing whether they all return the same answer. Pass a domain and a record type and the service queries every resolver in parallel and reports each resolver's answers, whether they are consistent (the change has fully propagated) or still differ (mid-propagation, stale caching or split-horizon DNS), the number of distinct answer sets and the union of all answers. Supported record types: A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, CAA and PTR. A single-resolver endpoint queries one named resolver on its own, and a failing resolver is reported per-resolver without failing the whole call. Live DoH (DNS-over-HTTPS) JSON queries, always current. Built for verifying DNS changes after a migration or launch, debugging split-horizon or stale-cache issues, and uptime/propagation monitoring. A DNS propagation checker — distinct from single-resolver record lookup (dns), the email-authentication analyzer (emailsec) and WHOIS (whois). No upstream key, no cache.

api.oanor.com/dnspropagation-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for MAC Address API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call MAC Address API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for MAC Address API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does MAC Address API cost?
MAC Address API has a free tier with 100 calls / month. Paid plans start at €6.00 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is MAC Address API GDPR-compliant?
All requests to MAC Address API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/macaddress-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/macaddress-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/macaddress-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/macaddress-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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