{"eid":"lanzou","name":"Lanzou Cloud","domain":"lanzou.com","resolved_by":"domain","topics":["netdisk-pan","storage"],"n_records":2,"best_vorder":1,"review":null,"aliases":["Lanzou (蓝奏云)","Lanzou Cloud","Lanzou Cloud (蓝奏云)","Lanzou Cloud / 蓝奏云","lanzou.com"],"records":[{"rid":"storage/lanzou","card":{"rid":"storage/lanzou","eid":"lanzou","topic":"storage","slug":"lanzou","provider":"Lanzou (蓝奏云)","url":"https://www.lanzou.com","domain":"lanzou.com","category":"cloud-drive","tier":null,"verdict":"qualifies-with-caveat","vorder":1,"grp":"usable","confidence":"reported","binding":"per-object-cap","identity_kind":"institution","identity_basis":"stated","needs_card":0,"needs_phone":0,"needs_id":0,"needs_institution":1,"country":null,"crypto":null,"interfaces":null,"egress_metered":0,"per_object_bytes":100000000,"retention_days":null,"verified_at":"2026-10-21T00:00:00.000Z","verified_basis":"inherited","checked_on":"2026-10-21","stale_on":"2026-11-04","n_evidence":3,"usd_month":null,"usd_per_tb_month":null,"summary":"Unlimited total storage on the free 普通版: '无限制的总存储空间，分享免登录，不限制下载流量，不限速，不限制下载次数'. Per-file cap is the binding constraint, and it is tier-set in 个人中心 → 文件升级.","duplicate_of":null,"n_unknown":5},"record":{"topic":"storage","slug":"lanzou","provider":"Lanzou (蓝奏云)","url":"https://www.lanzou.com","category":"cloud-drive","free_tier":{"stated":"Unlimited total storage on the free 普通版: '无限制的总存储空间，分享免登录，不限制下载流量，不限速，不限制下载次数'. Per-file cap is the binding constraint, and it is tier-set in 个人中心 → 文件升级.","unit":"unlimited","metered_on":"stored-bytes","source_url":"https://www.lanzou.com/u","read_on":"2026-10-21","notes":null},"per_object_cap":{"stated":"Per-file cap widely reported at 100 MB","bytes":100000000,"source_url":"https://www.lanzou.com/u","notes":"not stated"},"retention":{"stated":"not stated","source_url":"https://www.lanzou.com/u","notes":"not stated"},"egress":{"terms":"Explicitly unmetered: no download traffic limit, no speed limit, no download-count limit, and shares download without login.","metered":false},"interface":["unknown"],"interface_detail":"wrapper-only","tooling":"No official API. Community wrappers exist (lanzou uploader scripts, `lanzou-api` style repos); the browser upload form is the only documented path.","chaining":"Unlimited total x 100 MB per object is the pure 'per-record unlimited' shape the brief asks about: 20 TiB = ~210k objects. Registration needs a mainland phone number, so chaining is bounded by SIM supply, not by quota.","limits":[{"kind":"per-object-cap","value":"Per-file cap widely reported at 100 MB","source":"https://www.lanzou.com/u"}],"limits_note":"Per-file cap widely reported at 100 MB for free (raised per-account via the 文件升级 setting; Share links are public by design. Registration requires 手机号 + SMS code.","identity_cost":{"kind":"institution","detail":"derived from the record's prose, not from an identity field, and no signup was executed: r, which is the hardest registration gate in this slot. No API means any large-scale use depends on an unofficial wrapper that breaks when the web form changes. Unlimited total x 100","country":null},"reliability_note":"Registration is SMS-gated on a Chinese mobile number, which is the hardest registration gate in this slot. No API means any large-scale use depends on an unofficial wrapper that breaks when the web form changes.","confidence":"reported","confidence_note":"One page read moves it to documented.","evidence":[{"url":"https://www.lanzou.com/u","date":"2026-10-21","proved":"'无限制的总存储空间，分享免登录，不限制下载流量，不限速，不限制下载次数'"},{"url":"https://pc.woozooo.com/account.php?action=register","date":"2026-10-21","proved":"form fields 手机号 / 获取短信验证码 (phone + SMS required)"},{"url":"https://www.lanzou.com/q/zh/wt.htm","date":"2026-10-21","proved":"'关于上传文件大小: 在个人中心 - 文件升级 可以设置单个文件大小' (per-file cap is account-set)"}],"verdict":"qualifies-with-caveat","verified_at":"2026-10-21T00:00:00.000Z","notes":"Unlimited total storage on the free 普通版: '无限制的总存储空间，分享免登录，不限制下载流量，不限速，不限制下载次数'. Per-file cap is the binding constraint, and it is tier-set in 个人中心 → 文件升级.","extras":{},"binding":"per-object-cap","binding_note":"the per-object cap sets the shard size and therefore the object count; it bounds the total more tightly than any headline quota"},"claims":[{"path":"$.free_tier.stated","kind":"free-quota","num":null,"unit":null,"per":null,"currency":null,"usd":null,"fx_date":null,"parse":"unparsed"},{"path":"$.limits[0].value","kind":"limit:per-object-cap","num":100.0,"unit":"MB","per":null,"currency":null,"usd":null,"fx_date":null,"parse":"ok"}],"unknown":[["$.free_tier.notes","process"],["$.interface","interface-unknown"],["$.per_object_cap.notes","not-extracted"],["$.retention.notes","not-extracted"],["$.retention.stated","not-extracted"]],"history":[],"drift":[]},{"rid":"netdisk-pan/lanzou-cloud","card":{"rid":"netdisk-pan/lanzou-cloud","eid":"lanzou","topic":"netdisk-pan","slug":"lanzou-cloud","provider":"Lanzou Cloud (蓝奏云)","url":"https://www.lanzou.com","domain":"lanzou.com","category":"consumer-pan","tier":null,"verdict":"fails-quota","vorder":6,"grp":"rejected","confidence":"reported","binding":"per-object-cap","identity_kind":"country-phone","identity_basis":"stated","needs_card":0,"needs_phone":1,"needs_id":0,"needs_institution":0,"country":"86","crypto":null,"interfaces":"rest","egress_metered":0,"per_object_bytes":100000000,"retention_days":null,"verified_at":"2026-10-21T00:00:00.000Z","verified_basis":"inherited","checked_on":"2026-10-21","stale_on":"2026-11-04","n_evidence":8,"usd_month":null,"usd_per_tb_month":null,"summary":"Unlimited total storage on the free tier: '拥有无限制的总存储空间'. The per-file cap is 100 MB, and share links are permanent","duplicate_of":null,"n_unknown":0},"record":{"topic":"netdisk-pan","slug":"lanzou-cloud","provider":"Lanzou Cloud (蓝奏云)","url":"https://www.lanzou.com","category":"consumer-pan","free_tier":{"stated":"Unlimited total storage on the free tier: '拥有无限制的总存储空间'. The per-file cap is 100 MB, and share links are permanent","unit":"unlimited","metered_on":"stored-bytes","source_url":"https://www.lanzou.com/","read_on":"2026-10-21"},"per_object_cap":{"stated":"100 MB per file on the free tier: '不限空间大小，不限下载速度，只是限制文件大小，最大不超过100M/个文件'","bytes":100000000,"source_url":"https://www.cnblogs.com/Dongmy/p/18143085"},"retention":{"stated":"Share links are stated to be permanent: '分享文件地址永久有效'. Account retention is not published","days":null,"source_url":"https://www.lanzou.com/"},"egress":{"terms":"Free and explicitly unmetered: '下载不限速度，不限流量，不限次数，免登录下载'. The free product is ad-funded and the FAQ states 我们对下载速度不做任何限制","metered":false,"free_allowance":"unlimited","price_per_tb":null,"source_url":"https://www.lanzou.com/"},"interface":["rest"],"tooling":"no official API. A mature unofficial Python wrapper, zaxtyson/LanZouCloud-API with 811 stars and PyPI lanzou-api 2.6.10, does login, list, upload, download, delete, move, folder operations and direct-link extraction, and its README claims it works around both the file-type and the per-file size limits by splitting","chaining":"Unlimited total times 100 MB per object is the pure per-record-unlimited shape: 20 TiB is about 210,000 objects, all inside one free account's allowance. The gate is that registration is SMS-only on a mainland number","limits":[{"kind":"per-object-cap","value":"100 MB per file on the free tier","source":"https://www.cnblogs.com/Dongmy/p/18143085"},{"kind":"request-rate","value":"no WebDAV on a free account; access is only through direct-link extraction","source":"https://openlistteam.github.io/docs/zh/guide/drivers/lanzou.html"}],"identity_cost":{"kind":"country-phone","detail":"registration moved to accounts.woozooo.com and asks for 手机号 plus an SMS code with no email path and no documented foreign-number path","country":"86"},"reliability_note":"Domains rotate constantly, across lanzou.com, lanzoue, lanzouj, lanzoux and lanzoul, and a share link that works on one suffix 404s on another, so a script must carry a domain list. The CDN host itself is geo-flaky. Two seed waves disagree on the free total, one saying unlimited and another 5 to 10 GB","confidence":"reported","evidence":[{"url":"https://www.lanzou.com/","date":"2026-10-21","proved":"'拥有无限制的总存储空间' '下载不限速度，不限流量，不限次数，免登录下载！'; '分享文件地址永久有效'"},{"url":"https://www.cnblogs.com/Dongmy/p/18143085","date":"2026-10-21","proved":"'免费空间：无限制，只是限制文件大小，最大不超过100M/个文件'"},{"url":"https://github.com/zaxtyson/LanZouCloud-API","date":"2026-10-21","proved":"811 stars, PyPI lanzou-api the README claims it works around both the file-type and the per-file size limits"},{"url":"probe:https://abskoop.lanzoue.com/iyobY0jnhpdi","date":"2026-10-21","proved":"200, 1,976 B, title '数码小站 V0.4.2.zip - 蓝奏云', body contains src=\"/fn?AmQFb1o_bVDU...\""},{"url":"probe:POST https://apifile.woozooo.com/ajaxfile.php?file=95202518","date":"2026-10-21","proved":"200, 643 B, {\"zt\":1,\"dom\":\"https://developer4.lanrar.com\",\"url\":\"?AmRaZF1s...\"} for action=downprocess"},{"url":"probe:GET https://developer4.lanrar.com/file/<token>","date":"2026-10-21","proved":"200 but 2,714 B of gzipped JavaScript from an automated-traffic filter, so the raw CDN needs the token chain the parser path is reliable"},{"url":"https://pc.woozooo.com/account.php?action=register","date":"2026-10-21","proved":"'新用户注册, 手机号, 获取短信验证码, 我已同意服务协议并注册', so signup is SMS-only"},{"url":"https://openlistteam.github.io/docs/zh/guide/drivers/lanzou.html","date":"2026-10-21","proved":"'链接：只能显示链接里面的内容（不需要提供cookie就可以挂载）'"}],"verdict":"fails-quota","verified_at":"2026-10-21T00:00:00.000Z","binding":"per-object-cap","binding_note":"The total is genuinely unlimited and the egress is genuinely free, so nothing about capacity or traffic binds. 100 MB per object over a 10 TiB working set is 105,000 objects, which makes the file count the problem before the bytes.","notes":"The cleanest example in the corpus of the per-record-unlimited pattern, and the per-file cap is the entire cost. Two seed waves disagreed on the total, one saying unlimited and another 5 to 10 GB; the vendor's own page says unlimited and that is what is recorded, with the disagreement named.","extras":{"access_mode":"registration-gated","aliases":["Lanzou Cloud / 蓝奏云","Lanzou (蓝奏云)"],"cross_topic_record":"dossier/storage/lanzou.json","cross_topic_note":"the storage topic carries the same provider; this record is scoped to its role as a direct-link target"}},"claims":[{"path":"$.free_tier.stated","kind":"free-quota","num":100.0,"unit":"MB","per":null,"currency":null,"usd":null,"fx_date":null,"parse":"ok"},{"path":"$.limits[0].value","kind":"limit:per-object-cap","num":100.0,"unit":"MB","per":null,"currency":null,"usd":null,"fx_date":null,"parse":"ok"},{"path":"$.limits[1].value","kind":"limit:request-rate","num":null,"unit":null,"per":null,"currency":null,"usd":null,"fx_date":null,"parse":"unparsed"}],"unknown":[],"history":[],"drift":[]}]}