US passenger serials plates.autos

Alaska · in-format generated example

REF 558 — license plate combination

REF 558 is filed as a generated example of the Alaska sequential passenger serial — AAA 999 (3 letters + 3 digits). Letters REF sit in positions 1, 2, 3; digits 558 sit in positions 4, 5, 6. 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 12,167,000 slots, adopted in this atlas from 1981 after numeric-only and early gold-on-blue runs.

Disclaimer. REF 558 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
REF 558
Alphanumeric
REF558
State format
Alaska · AAA 999
Character count
6
Letters
REF
Numbers
558
Letter positions
1, 2, 3
Numeric positions
4, 5, 6
Combinations in map
12,167,000
Mixed-radix rank
7,503,558

How to read REF 558

Spoken: Romeo · Echo · Foxtrot · five · five · eight. Normalised forms: REF558, slug ref-558, display REF 558.

Character map

PositionGlyphClassRole
1RLetterAlphabetic series glyph (NATO: Romeo).
2ELetterAlphabetic series glyph (NATO: Echo).
3FLetterAlphabetic series glyph (NATO: Foxtrot).
—spaceSeparatorPunctuation in the published pattern, not a serial value.
45DigitNumeric series glyph (spoken: five).
55DigitNumeric series glyph (spoken: five).
68DigitNumeric series glyph (spoken: eight).

Alaska format in brief

Alaska moved from territorial numbering into a letter-digit mix as the vehicle fleet grew. The three-by-three block remains the teaching example because it is short, high-contrast, and still in the passenger series.

I, O and Q are treated as skipped in this atlas to match common die and OCR practice on Alaskan stacks. Full essay: Alaska license-plate format.

Combinatorics for REF 558

Alphabet size 23 × the digit slots in AAA 999 produces 12,167,000 serials. Rank 7,503,558 is about the 61.6714 percentile of that space (0 = first serial, 100 = last).

States whose map accepts REF558

Serial neighbours of REF 558

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

Similar combinations (this request)

Same Alaska map, new PHP random draw on every reload — extra internal links, not a new identity for REF 558.

Why someone might look up REF 558

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 Alaska plate is a physical die issued from a series or a vanity queue. REF 558 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 Alaska motor-vehicle agency, not plates.autos.

Questions about REF 558

Which state does REF 558 belong to?

REF 558 is analysed here as a generated example of the Alaska passenger serial (AAA 999). It is not assigned to a motorist by this site. The glyphs fit the sequential passenger skeleton used in this atlas.

Is REF 558 real?

No claim is made that REF 558 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 REF 558 mean?

REF 558 is a serial, not a slogan. Letters REF occupy positions 1, 2, 3; digits 558 occupy positions 4, 5, 6. Spoken with the NATO alphabet it reads Romeo · Echo · Foxtrot · five · five · eight.

Which state uses REF 558?

This page files REF 558 under Alaska because it fits that state’s AAA 999 passenger map. The same alphanumeric string also fits Hawaii, Iowa, Louisiana, Minnesota, Mississippi, Nebraska, Oklahoma, South Carolina, Vermont. Other states with a different skeleton will reject the same glyphs.

Which vehicle uses REF 558?

None that this atlas knows of. There is no vehicle make, model, colour, or VIN attached to REF 558. If you photographed a car, the door-jamb sticker and the registration — not this page — identify the vehicle.

Which state’s format does REF 558 follow?

Alaska sequential passenger plates are taught here as AAA 999 (3 letters + 3 digits), in use in this atlas from 1981. Earlier Alaska plates used numeric-only and early gold-on-blue runs.

Is REF 558 a vanity plate?

Probably not, as modelled. Sequential passenger serials are issued in series; vanity (personalised) plates are requested strings that often break AAA 999. REF 558 fits the sequential map, so this atlas treats it as a series example, not a purchased phrase.

How is REF 558 read?

Left to right as printed: REF 558. Aloud: Romeo · Echo · Foxtrot · five · five · eight. Hyphens and spaces are separators in the published pattern, not extra serial values.

Which letters and numbers are in REF 558?

Letters: REF (3). Digits: 558 (3). Combined alphanumeric length: 6. Separators in the Alaska display form are taken from AAA 999.

How many combinations can the REF 558 format produce?

The Alaska map AAA 999 with a 23-letter alphabet yields 12,167,000 distinct serials. REF 558 sits at rank 7,503,558 in that mixed-radix order (about the 61.6714 percentile).

Could REF 558 have been issued before?

It could, mathematically: the string is inside the 12,167,000-slot space. Issuance is a DMV operation (series rolls, skipped blocks, recalls). This page does not query a live file and cannot say whether REF 558 was ever bolted to a bumper.

Why does REF 558 appear on Google?

Because plates.autos publishes a stable analysis URL for the combination. Search engines that crawl https://plates.autos/alaska/license-plate-combinations/ref-558/ are reading an educational combinatorics page, not a leaked registration. Ranking is not a proof of issuance.

Which country or region is REF 558 from?

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

Is REF 558 a valid US format?

REF 558 is a valid glyph string under the Alaska AAA 999 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 REF 558?

On the Alaska sequential map: letters from ABCDEFGHJKLMNPRSTUVWXYZ and digits 0–9. Skipped letters in this atlas: IOQ. Separators: whatever AAA 999 prints (space, hyphen, or dot). Decorative dies and stacked graphics do not add serial glyphs.

How might REF 558 have been generated?

Two honest answers. A DMV would emit it by walking the AAA 999 series. This website can also construct it with PHP by placing letters REF and digits 558 into those slots — which is exactly how a generated example is made. Neither method is a public records search.

Was REF 558 used in a film or series?

This atlas does not track screen-used plates. Prop departments often invent in-format serials. If REF 558 appeared on camera, that is outside the dataset here; treat any match as unverified.

Why might REF 558 be blurred in a photo?

Publishers, Street View pipelines, and news desks often blur plates as a privacy habit, not because REF 558 is special. A blur is not evidence that the combination is issued, sensitive, or unique.

What are similar plate numbers to REF 558?

Immediate serial neighbours increment the mixed-radix rank by small deltas (for example REF 555 and REF 556). Same-format random draws on this page change on refresh so crawlers can discover more in-class URLs without turning REF 558 itself into a moving target.

What appears online about REF 558?

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. REF 558 as published here is a generated example combination.