RAINBOWPHONES

YOUR SHA256 PHONEBOOK
Supported Ranges: India: +916xxxxxxxxx – +919xxxxxxxxx (4 billion numbers)
Singapore: +658xxxxxxx – +659xxxxxxx (20 million numbers)

Supported Hash Formats: SHA256 Hexadecimal (64 characters), Base64 (43-44 characters), Base64url (43-44 characters) → Try these examples
How this works? The phonebook is achieving sub-millisecond performance by using binary search with O(log n) complexity for instant hash lookups. Phone numbers are not stored; instead, they are reconstructed from indices on the fly during lookup operations. The rainbow table for India and Singapore range spans approximately 161 GB, containing 4.02 billion entries at 40 bytes each (32 bytes for the SHA256 hash plus 8 bytes for the index). Data is stored efficiently in memory-mapped binary files, no external database is used. Built with Rust using memmap2 for memory mapping, Rayon for parallel processing, and Actix Web for serving this interface.
Example Hashes
Valid Hash (India, sha256 hex)
44bf2ceab71e29b2933eef39ee696143e9b81c1eeeec0530def04ff6bcc2dfee
SHA256 of +916000000000
Valid Hash (India, sha256 hex)
ffdbe12d10dca9a543d5c7495d0a2b1ab8c083099f2570b5f29e5c2c7fc0b6fc
SHA256 of +916000000001
Valid Hash (India, Base64)
RL8s6rceKbKTPu857mlhQ+m4HB7u7AUw3vBP9rzC3+4=
SHA256 of +916000000000 (Base64 format)
Valid Hash (India, Base64url)
RL8s6rceKbKTPu857mlhQ-m4HB7u7AUw3vBP9rzC3-4
SHA256 of +916000000000 (Base64url format)
Not Found
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Valid format but not in table
Not Found
0000000000000000000000000000000000000000000000000000000000000000
Valid format but not in table