detect-carrier?tracking_number=1Z+879E93+03+4683+4440

Identify which carrier issued a tracking number using a deterministic, versioned signature set - prefixes, lengths, carrier check digits and UPU S10 structure - returning ranked…

Identify which carrier issued a tracking number using a deterministic, versioned signature set - prefixes, lengths, carrier check digits and UPU S10 structure - returning ranked candidates with the reasons each matched, the parsed S10 details and a rule-based (uncalibrated) confidence. No upstream call and no carrier account required. Use when: Which carrier is this tracking number from?

UNRATEDDelisted

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.001 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x7c0ba1d1…3a5a35da

URL

https://api-staging.eckari.com/v1/parcels/detect-carrier?tracking_number=1Z+879E93+03+4683+4440

Seen

first 35 days ago · last 17 days ago

49 free handshakes

Payment

Pays through

x402

Offered on?

Base Sepolia USDC

Listed on?

Base Sepolia

Handshakescomputed 10 days ago

0.923 from 48 free handshakes over 30 days · UNRATED ?

How the composite of 0.923 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
livenesscosts the most it answered at all	0.60	1.00	0.872		0.523	0	−0.077
latency p95 it answered as fast as its class	0.20	1.00	1.000		0.200	0	0
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.923	gap to 1.000 = 0.077 · 0.000 short · 0.077 uncertain	0.923	−0.000	−0.077

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check

BURN_INFREE_TIER_ONLY

Verify it yourselfnpx teppi-check https://api-staging.eckari.com/v1/parcels/detect-carrier?tracking_number=1Z+879E93+03+4683+4440curl -s https://api.teppi.xyz/v1/trust/cap_01M1A59SET965NBA09EY4NNVQQ