US passenger serials plates.autos

Washington · in-format generated example

COC9378 — license plate combination

COC9378 is filed as a generated example of the Washington sequential passenger serial — AAA9999 (3 letters + 4 digits). Letters COC sit in positions 1, 2, 3; digits 9378 sit in positions 4, 5, 6, 7. This page does not identify a car, an owner, or a live registration. It measures how the string sits inside a published character map of 175,760,000 slots, adopted in this atlas from 2010 after ABC-1234 and mountain graphic resets.

Disclaimer. COC9378 is not published here as a real vehicle or plate record. It is a generated example of a serial map for teaching and testing.

Plate text
COC9378
Alphanumeric
COC9378
State format
Washington · AAA9999
Character count
7
Letters
COC
Numbers
9378
Letter positions
1, 2, 3
Numeric positions
4, 5, 6, 7
Combinations in map
175,760,000
Mixed-radix rank
17,189,378

How to read COC9378

Spoken: Charlie · Oscar · Charlie · nine · three · seven · eight. Normalised forms: COC9378, slug coc-9378, display COC9378.

Character map

PositionGlyphClassRole
1CLetterAlphabetic series glyph (NATO: Charlie).
2OLetterAlphabetic series glyph (NATO: Oscar).
3CLetterAlphabetic series glyph (NATO: Charlie).
49DigitNumeric series glyph (spoken: nine).
53DigitNumeric series glyph (spoken: three).
67DigitNumeric series glyph (spoken: seven).
78DigitNumeric series glyph (spoken: eight).

Washington format in brief

Washington’s Evergreen State plates moved through ABC-1234 into a no-dash seven-character block as cameras and dies simplified.

SPR9932 matches the skeleton. Display may add a hyphen only as a normalisation. Full essay: Washington license-plate format.

Combinatorics for COC9378

Alphabet size 26 × the digit slots in AAA9999 produces 175,760,000 serials. Rank 17,189,378 is about the 9.78 percentile of that space (0 = first serial, 100 = last).

States whose map accepts COC9378

Serial neighbours of COC9378

Deterministic rank deltas. These links do not change on refresh.

Similar combinations (this request)

Same Washington map, new PHP random draw on every reload — extra internal links, not a new identity for COC9378.

Why someone might look up COC9378

UseNote
Vanity researchPeople compare a wanted phrase against the sequential map so they can see whether it is a standard serial or a specialty request.
Fleet labellingInventories and film-unit vehicles often need a plausible unused-looking serial that still obeys a state’s character classes.
Fiction and propsWriters and set designers pick a combination that could exist on a given state’s dies without copying a photographed car.
Dataset testingOCR, ANPR and form-validation tests need strings that match a published pattern, including separators.
Format teachingThe combination is a worked example of how many plates a map can hold, not a window into a motor-vehicle file.

Generated example versus a real plate

A real Washington plate is a physical die issued from a series or a vanity queue. COC9378 on this URL is a string that fits that series’ character classes. Identical glyphs can exist in both worlds; this website has no feed that would let it tell them apart. If you need an official answer, ask the Washington motor-vehicle agency, not plates.autos.

Questions about COC9378

Which state does COC9378 belong to?

COC9378 is analysed here as a generated example of the Washington passenger serial (AAA9999). It is not assigned to a motorist by this site. The glyphs fit the sequential passenger skeleton used in this atlas.

Is COC9378 real?

No claim is made that COC9378 is currently issued, expired, or reserved. The string sits inside a published character map. Whether a DMV ever stamped it is a registration fact this atlas does not observe.

What does COC9378 mean?

COC9378 is a serial, not a slogan. Letters COC occupy positions 1, 2, 3; digits 9378 occupy positions 4, 5, 6, 7. Spoken with the NATO alphabet it reads Charlie · Oscar · Charlie · nine · three · seven · eight.

Which state uses COC9378?

This page files COC9378 under Washington because it fits that state’s AAA9999 passenger map. The same alphanumeric string also fits Arizona, Georgia, Michigan, New York, North Carolina, Ohio, Pennsylvania, Texas, Virginia, Wisconsin. Other states with a different skeleton will reject the same glyphs.

Which vehicle uses COC9378?

None that this atlas knows of. There is no vehicle make, model, colour, or VIN attached to COC9378. If you photographed a car, the door-jamb sticker and the registration — not this page — identify the vehicle.

Which state’s format does COC9378 follow?

Washington sequential passenger plates are taught here as AAA9999 (3 letters + 4 digits), in use in this atlas from 2010. Earlier Washington plates used ABC-1234 and mountain graphic resets.

Is COC9378 a vanity plate?

Probably not, as modelled. Sequential passenger serials are issued in series; vanity (personalised) plates are requested strings that often break AAA9999. COC9378 fits the sequential map, so this atlas treats it as a series example, not a purchased phrase.

How is COC9378 read?

Left to right as printed: COC9378. Aloud: Charlie · Oscar · Charlie · nine · three · seven · eight. Hyphens and spaces are separators in the published pattern, not extra serial values.

Which letters and numbers are in COC9378?

Letters: COC (3). Digits: 9378 (4). Combined alphanumeric length: 7. Separators in the Washington display form are taken from AAA9999.

How many combinations can the COC9378 format produce?

The Washington map AAA9999 with a 26-letter alphabet yields 175,760,000 distinct serials. COC9378 sits at rank 17,189,378 in that mixed-radix order (about the 9.78 percentile).

Could COC9378 have been issued before?

It could, mathematically: the string is inside the 175,760,000-slot space. Issuance is a DMV operation (series rolls, skipped blocks, recalls). This page does not query a live file and cannot say whether COC9378 was ever bolted to a bumper.

Why does COC9378 appear on Google?

Because plates.autos publishes a stable analysis URL for the combination. Search engines that crawl https://plates.autos/washington/license-plate-combinations/coc-9378/ are reading an educational combinatorics page, not a leaked registration. Ranking is not a proof of issuance.

Which country or region is COC9378 from?

The working assumption on this page is the United States, West region, state of Washington. Other countries use different dies, shields and checksums. A similar glyph string abroad would be a coincidence of alphabet, not a shared registry.

Is COC9378 a valid US format?

COC9378 is a valid glyph string under the Washington AAA9999 sequential passenger model used in this atlas. Validity here means “fits a documented sequential passenger skeleton,” not “cleared by a motor-vehicle agency.” Optional, military, and government plates are out of scope.

Which characters can appear on COC9378?

On the Washington sequential map: letters from ABCDEFGHIJKLMNOPQRSTUVWXYZ and digits 0–9. Skipped letters in this atlas: none modelled. Separators: whatever AAA9999 prints (space, hyphen, or dot). Decorative dies and stacked graphics do not add serial glyphs.

How might COC9378 have been generated?

Two honest answers. A DMV would emit it by walking the AAA9999 series. This website can also construct it with PHP by placing letters COC and digits 9378 into those slots — which is exactly how a generated example is made. Neither method is a public records search.

Was COC9378 used in a film or series?

This atlas does not track screen-used plates. Prop departments often invent in-format serials. If COC9378 appeared on camera, that is outside the dataset here; treat any match as unverified.

Why might COC9378 be blurred in a photo?

Publishers, Street View pipelines, and news desks often blur plates as a privacy habit, not because COC9378 is special. A blur is not evidence that the combination is issued, sensitive, or unique.

What are similar plate numbers to COC9378?

Immediate serial neighbours increment the mixed-radix rank by small deltas (for example COC9375 and COC9376). Same-format random draws on this page change on refresh so crawlers can discover more in-class URLs without turning COC9378 itself into a moving target.

What appears online about COC9378?

You may find this analysis, forum guesses, or unrelated hits (part numbers, product SKUs). None of those sources, including plates.autos, is a substitute for a state records request. COC9378 as published here is a generated example combination.