# Install
gem install ipscope# Quickstart: single, batch & prefix lookups
Pass your API key explicitly or set IPSCOPE_KEY in your environment. Every lookup returns the canonical response schema with geo, network, connection, security and security_extensions.
require "ipscope"
client = IpScope::Client.new(api_key: ENV.fetch("IPSCOPE_KEY"))
# 1. Single IPv4 or IPv6 lookup (cached automatically in bounded LRU)
info = client.lookup_ip("198.51.100.7")
puts "#{info.ip} #{info.geo.country_code} AS#{info.network.asn} VPN=#{info.security.is_vpn}"
# 2. Batch lookup (up to 100 IPs; deduplicates & reuses cached entries)
batch = client.lookup_batch(["198.51.100.7", "1.1.1.1", "2606:4700:4700::1111"])
batch.results.each do |record|
puts "#{record.ip} -> #{record.network.organization}"
end
# 3. Memory-bounded lazy Enumerator for 10,000+ IPs
client.lookup_batch_stream(large_ip_list).each do |chunk|
chunk.results.each do |record|
# Constant O(chunk) memory overhead
end
end
# 4. Network CIDR prefix lookup
prefix = client.lookup_network("198.51.100.0/24")
puts "#{prefix.queried_cidr} -> AS#{prefix.record.asn} (#{prefix.record.organization})"1. Single IPv4/IPv6 lookup response (GET /v1/ip/{ip})
{
"ip": "198.51.100.7",
"ip_version": 4,
"matched_network": "198.51.100.0/24",
"geo": {
"country_code": "US",
"declared_country_code": "US",
"physical_country_code": "US",
"is_virtual_location": false,
"location_type": "physical",
"confidence": 0.94,
"subdivision": "Virginia",
"city": "Ashburn",
"postal_code": "20147",
"latitude": 39.0438,
"longitude": -77.4874,
"accuracy_radius_km": 10,
"timezone": "America/New_York"
},
"network": {
"asn": 64501,
"organization": "Example Cloud LLC"
},
"connection": {
"connection_type": "hosting",
"is_hosting": true,
"is_residential": false,
"is_mobile": false,
"is_business": false
},
"security": {
"is_vpn": true,
"is_hosting": true,
"is_tor_exit": false,
"is_proxy": false,
"anonymizer_type": "vpn",
"confidence": 0.96,
"reason_codes": [
"vpn_handshake_confirmed",
"datacenter_asn_range"
]
},
"security_extensions": {
"abuse_velocity_score": 18,
"is_known_scanner": false,
"observation_recency_hours": 12,
"anonymizer_reason": "vpn_handshake_confirmed",
"threat_level": "medium",
"abuse_velocity": "low",
"confidence": 0.96
},
"dataset_version": "2026-10-27T00:00:00Z.crawl-1793088000000",
"updated_at": "2026-10-27T00:00:00Z"
}4. Network CIDR prefix lookup response (GET /v1/networks/{prefix}/{length})
{
"queried_cidr": "198.51.100.0/24",
"family": 4,
"dataset_version": "2026-10-27T00:00:00Z.crawl-1793088000000",
"record": {
"prefix": "198.51.100.0/24",
"family": 4,
"asn": 64501,
"organization": "Example Cloud LLC",
"countryCode": "US",
"city": "Ashburn",
"locationType": "physical",
"isVpn": true,
"isHosting": true,
"isTorExit": false,
"isProxy": false,
"anonymizerType": "vpn"
}
}# Architecture & runtime guarantees
- Zero external gem dependencies (
net/http,json,uri,ipaddrstdlib only). - Thread- and Fiber-safe bounded LRU cache (
Mutex-synchronized RubyHashinsertion order) safe for multi-threaded Puma and Sidekiq workers. - Frozen
Data.define/ immutable value objects (IpLookupResponse,GeoInfo,SecurityInfo) prevent accidental mutation across threads.
# Reading local MMDB files
If you subscribe to a downloadable database, our .mmdb snapshots open directly in standard MaxMind DB readers with sub-microsecond in-memory lookups:
require "maxmind/db"
reader = MaxMind::DB.new("/var/lib/ipscope/ipscope-complete.mmdb", mode: MaxMind::DB::MODE_MEMORY)
record = reader.get("198.51.100.7")
puts record["geo"]["country_code"]# Plain HTTP fallback
Need to call the REST API without installing a package? Use Ruby’s standard HTTP client directly:
require "net/http"
require "json"
uri = URI("https://api.ipscope.io/v1/ip/198.51.100.7")
req = Net::HTTP::Get.new(uri, "Authorization" => "Bearer #{ENV.fetch('IPSCOPE_KEY')}")
res = Net::HTTP.start(uri.host, uri.port, use_ssl: true) { |http| http.request(req) }
info = JSON.parse(res.body)