Premium auction outcomes | ENSWhois Analyses

When a .eth name expires past grace, it enters a 21-day dutch auction where price decays from $100M to base. Do these auctions clear, and if so at what premium?

Distribution of premium paid (above base price) for cleared auctions, per length bucket:

Median (P50) - typical clearing premium for that bucket
P90 / P99 / Max - tail behaviour: where the truly-coveted names land in the price decay
Total auction premium - aggregate value extracted by the auction mechanism per tier

What this tells you: Indicates if and where premium pricing creates a meaningful auction-revenue stream, or whether most of the auction volume is cheap longer names cycling through.

Premium-auction clearing prices by length

Names that cleared through the 21-day dutch auction. Percentile columns show the distribution of premium paid per length bucket — in ETH (on-chain truth) .

USD columns will appear once the snapshot is regenerated against an eth_usd_daily-aware build of premium-auction-outcomes.js.

Premium share of registration revenue (monthly)

Length	Auctions cleared	Median premium (ETH)	P90 (ETH)	P99 (ETH)	Max (ETH)	Total premium (ETH)
3 chars	944	0.0977	1.66	8.59	21.46	595.77
4 chars	4,951	0.0337	0.1889	1.22	11.00	528.15
5 chars	5,081	0.0040	0.0541	0.4646	7.22	171.28
6–9 chars	10,823	0.0066	0.0834	0.6294	16.50	501.23
10+ chars	4,434	0.0062	0.0636	0.3859	7.76	144.72

Premium-auction surcharge as a percentage of total NameRegistered revenue (base + premium). Highlights how much of any given month's registrar revenue came from auction-cleared names vs. fresh base-price registrations.

Chart starts at 2019-04-30 - that's when the ETHRegistrarController was updated to one that separated the base and premium components of registration cost in NameRegistered events.

Methodology

Premium auction = 21-day dutch auction after grace period ends. Price decays from $100M to 0 over the 21-day window.
All values shown are the premium component only - i.e. the dutch-auction surcharge above the pricing-tier base price. They do NOT include the base registration fee (e.g. $640/yr for 3-char × N years), which is separately determined by the USD price oracle at registration time.
Each row in the percentile table is one NameRegistered event on mainnet .eth controllers where premium > 0. Names that cleared after the auction window ended (premium = 0) are excluded from the percentile distribution but included in the monthly share chart's denominator.
ETH percentiles are computed across wei values per length bucket. USD percentiles are computed against per-event dollar amounts (premium_wei × the day's ETH/USD price), so they rank auctions by their dollar magnitude across years rather than re-converting an ETH percentile through a single rate. ETH/USD prices come from the eth_usd_daily table; missing days fall back to the nearest available date.
Monthly share chart pulls from the revenue-by-length snapshot. premium_pct = sum(premium_wei) / sum(base + premium_wei) across all NameRegistered events in that month, all length buckets combined. NameRenewed events never carry premium and are excluded.
The chart only starts when the V2 ETHRegistrarController went live (block ~16,925,617, around April 2023). V1-era controllers emit a single 'cost' field on NameRegistered with no base/premium split, so we have nothing to plot for the V1 era. Months with zero base+premium signal are dropped from the line entirely (rather than rendered as 0%, which would imply 'no premium happened' rather than 'no signal').