Nihonpost
I parsed Japan Post's KEN_ALL.CSV so you don't have to
Details
- External ID
- 48899676
- Source
- HN
- Company
- —
- Product
- Nihonpost
- Website domain
- github.com
- Launched
- July 13, 2026
- Cohort
- —
- Upvotes
- 5
- Upvotes percentile
- 0.1081242532855436
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:26 p.m.
- Updated at
- Sept. 7, 2026, 9:26 p.m.
Enrichment
- Theme
- niche developer utilities and toolchains
- Vertical
- Horizontal
- Function
- Data infrastructure
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- parsed japan postal address data
- Manually corrected
- False
Could you build this?
Yes Parsing Japan Post's notoriously messy Shift-JIS KEN_ALL.CSV dataset into structured JSON or a searchable API is a classic data-cleaning script easily generated by an LLM.
Discussion
1 comment analyzed.
Concerns raised: Postal code resolution lacks sufficient granularity for block-level precision, Terminology ('town') misleading for actual geographic scope
Feature requests: More precise address auto-completion below town/area level
Competitors
Other products that read as similar to this one — 55 launches clear the similarity bar, closest 8 shown.
Attention rank: #52 of 56 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 234 days after the earliest competitor.
- Japan and Korea Parliament Members Archive · hn · 2026-07-18 · 6 upvotes · similarity 0.44
- Bye-wk · hn · 2026-06-13 · 7 upvotes · similarity 0.41
- jsoncsvonline · ph · 2026-09-10 · 1 upvotes · similarity 0.38
- Data Cleaner for Notion · ph · 2026-09-25 · 1 upvotes · similarity 0.37
- Magic CSV · hn · 2025-12-31 · 17 upvotes · similarity 0.37
- FileCheck · ph · 2026-09-24 · 1 upvotes · similarity 0.37
- QueryPad · hn · 2026-03-22 · 5 upvotes · similarity 0.37
- Parsekit — Free JSON Tools for Developer · ph · 2026-09-29 · 1 upvotes · similarity 0.36
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a data infrastructure tool for Media & entertainment yet.