realurls

Prefect

Also known as: PrefectHQ, PrefectHQ/prefect. GitHub PrefectHQ.

Official domains: prefect.io

Identity anchored by: github-history:PrefectHQ/prefect(age=8y,contrib=473,stars=23783). Display name from github_org_name(self-declared).

prefect.io verified primary · confidence 0.83 · verified 2026-09-05

关联锚点合并，A8 与保留项不独立，不重复计数 · 1 条独立锚点 + 2 条独立佐证，达到 verified 门槛

EvidenceWhat it shows
A1 anchor GitHub org verified this domain (DNS-level check by GitHub)
blog=https://prefect.io org=PrefectHQ org_verified=true
 source
A8 anchor Anchored repository's homepage points here, and this site links back
age_days=2989 backlink=true contributors=473 homepage=https://prefect.io org=PrefectHQ repo=PrefectHQ/prefect repo_anchored=true stars=23783
 source
A4 not counted TLS certificate carries organisation name (OV/EV)
issuer=Let's Encrypt san_count=1 subject_org= validation_type=DV
 TLS handshake prefect.io:443
B4 corroboration Wayback Machine history
first_snapshot=2018-08-16 history_days=2942
 source
B5 corroboration Tranco top-1M ranking
date=2026-09-04 rank=68060
 source
1 piece(s) of evidence not counted — why
  • A4: DV 证书不含组织信息（现代科技公司普遍使用 DV，此项常态缺失）
Reproduce this yourself
# A1 — GitHub verified this org's domain
curl -s https://api.github.com/orgs/PrefectHQ | jq '{name, blog, is_verified}'

# A8 — anchored repo's homepage
curl -s https://api.github.com/repos/PrefectHQ/prefect | jq '{homepage, created_at, stargazers_count}'

# B4 — first Wayback snapshot
curl -s "http://web.archive.org/cdx/search/cdx?url=prefect.io&limit=1&output=json"

# B5 — Tranco rank
curl -s https://tranco-list.eu/api/ranks/domain/prefect.io

# Re-run our whole pipeline for this domain
git clone https://github.com/zhouchungong/realurls-registry && cd realurls-registry && pip install -e . && python -m src.verify prefect.io

Think this is wrong? Open a dispute — the burden of proof is on us, and the record is downgraded while we check. Record: YAML.