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Carrier profile · USDOT 8421 · Updated 06/13/2026

INSULATION & REFRACTORIES SERVICES INC

5 power unitsMEMPHIS, TN
CARRIER ACTIVERATED SATISFACTORY
Verified linksFMCSA SAFERCall
Observed fleet · trailing 24 mo daily
5Power units
Self-reported · MCS-150
—Trailers seen
None observed · 24 mo
—Avg age (yr)
Awaiting decode
Call dispatch(901) 522-4300

Load decision · FMCSA snapshot · 2026-06-13

Limited record

Not enough federal record to assess. Verify authority and insurance directly.

Established 52 yearsNo inspection history despite active fleet
Operating authority52 yr active
since 1974
Insurance (BIPD)Unknown
FMCSA L&I
Vehicle OOS · 24mo—%
▼ 22.26% nat'l
Crashes · fatal0
clean 24 mo
Vektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots
Fleet typeIdentity

Small fleet

5 power units. Brokers price each fleet type apart.

Fleet age vs peersDecoding

—

Awaiting VIN decode

Identity stabilityStable

52 yr unchanged

Same registration since 1974 — no chameleon / reincarnation signal.

AI readCarrier, 52-yr authority — unrated.Full read

Is INSULATION & REFRACTORIES SERVICES INC safe to work with?

Is INSULATION & REFRACTORIES SERVICES INC safe to load? INSULATION & REFRACTORIES SERVICES INC (USDOT 8421) is an active small-fleet motor carrier based in MEMPHIS, TN, operating 5 power units and 9 drivers. Operating authority has been active 52 years (past the 24-month broker-confidence threshold). FMCSA rates it Satisfactory. Vektor does not assign this carrier a safety score — there is not enough federal record to assess it. Verify authority and insurance directly. Source: FMCSA SAFER/MCMIS, last updated 2026-06-13.

FMCSA fields + Vektor analysis · updated 2026-06-13
I&INSULATION & REFRACTORIES SERVICES INC 50
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Frequently asked

What is INSULATION & REFRACTORIES SERVICES INC's USDOT number?

INSULATION & REFRACTORIES SERVICES INC's USDOT number is 8421.

Is INSULATION & REFRACTORIES SERVICES INC authorized to operate?

As of 2026-06-13, INSULATION & REFRACTORIES SERVICES INC is active in the FMCSA register.

How big is INSULATION & REFRACTORIES SERVICES INC's fleet?

INSULATION & REFRACTORIES SERVICES INC operates 5 power units and 9 drivers per its most recent MCS-150 filing.

Where is INSULATION & REFRACTORIES SERVICES INC based?

INSULATION & REFRACTORIES SERVICES INC is based in MEMPHIS, TN.