ILSERBY Free developer tools & network checks
IP lookup

Software & data credits

Third-party data and assets used by ILSERBY that require attribution or acknowledgment.

Data sources

  • DB-IP Lite (Country, City, ASN) — db-ip.com — geolocation enrichment on DNS and IP lookup pages. IP Geolocation by DB-IP.
  • DNS blocklists (DNSBL/RBL) — live DNS reputation queries for the IP Blacklist Check tool, including Spamhaus, SpamCop, PSBL, SpamRATS, Invaluement, UCEProtect, Blocklist.de, GreenSnow, and DroneBL. Each provider maintains its own listing policy and delisting process.
  • AbuseIPDB — abuseipdb.com — community abuse reports and confidence scores used by IP Blacklist Check and Bulk Blacklist Check. Public report pages are linked when an address meets the actionable confidence threshold.
  • crt.sh — crt.sh — certificate transparency log search on the SSL Checker page.
  • IANA RDAP bootstrap (DNS, IPv4, IPv6) — data.iana.org/rdap — registry routing for WHOIS/RDAP and IP registration lookups.
  • RIPE Stat whois API — stat.ripe.net — fallback registration summary for IP Lookup when a regional RDAP server is unreachable.
  • Published cloud provider IP ranges (AWS, Google/GCP, Azure, Oracle Cloud, Cloudflare, Fastly, DigitalOcean, Linode) — local SQLite used to flag datacenter/hosting addresses on IP Lookup.
  • Techaro free datacenter MMDB — github.com/TecharoHQ/reputationdb — additional datacenter IP coverage on IP Lookup.

UI assets & libraries

  • flag-icons — lipis/flag-icons (MIT) — country flags on network results.
  • node-forge — digitalbazaar/forge (BSD / GPL) — client-side self-signed certificate generation on the Certificate Generator page.
  • MaxMind DB Reader — maxmind/MaxMind-DB-Reader-php (Apache-2.0) — reads the local datacenter MMDB on IP Lookup.
  • Outfit & JetBrains Mono — via Google Fonts.

Attributions reflect third-party components and datasets integrated into ILSERBY tools as of October 16, 2026.