{
"usdot": "80806",
"legal_name": "J B HUNT TRANSPORT INC",
"dba_name": "J B HUNT",
"operation": {
"carrier_operation": "A",
"hazmat": false,
"passenger": false,
"authorized_for_hire": true,
"exempt_for_hire": false,
"private_only": false
},
"address": {
"physical": {
"street": "615 J B HUNT CORPORATE DRIVE",
"city": "LOWELL",
"state": "AR",
"zip": "72745",
"country": "US"
},
"mailing": {
"street": "615 J B HUNT CORPORATE DRIVE",
"city": "LOWELL",
"state": "AR",
"zip": "72745",
"country": "US"
}
},
"contact": {
"phone": "(479) 820-0000",
"fax": "(479) 820-4566",
"email": "[email protected]"
},
"fleet": {
"power_units": 25280,
"drivers": 24116
},
"registration": {
"added_date": "1974-06-01",
"days_registered": 19123,
"mcs150_date": "2025-07-07"
},
"authority": [
{
"docket": "MC135797",
"type": "Broker of Household Goods",
"status": "Active"
},
{
"docket": "MC135797",
"type": "Motor Carrier of Property (Except Household Goods)",
"status": "Active"
},
{
"docket": "MC135797",
"type": "Broker of Property (Except Household Goods)",
"status": "Active"
},
{
"docket": "MC135797",
"type": "Motor Carrier of Household Goods",
"status": "Active"
}
],
"insurance": {
"bipd_required": 1000000,
"bipd_on_file": 3500000,
"cargo_required": true,
"cargo_on_file": true,
"bond_required": true,
"bond_on_file": true,
"filings": [
{
"docket": "MC135797",
"type": "bipd",
"type_code": "1",
"form": "BMC-91X",
"insurer": "Ace American Insurance Company",
"policy_number": "XSAH11347472",
"coverage": 2500000,
"effective_date": "2025-12-31"
},
{
"docket": "MC135797",
"type": "bipd",
"type_code": "1",
"form": "BMC-91X",
"insurer": "Self-Insured",
"policy_number": "0",
"coverage": 1000000,
"effective_date": "1993-03-01"
},
{
"docket": "MC135797",
"type": "cargo",
"type_code": "2",
"form": "BMC-83",
"insurer": "Travelers Casualty and Surety Company of America",
"policy_number": "105917743",
"coverage": 5000,
"effective_date": "2023-10-23"
},
{
"docket": "MC135797",
"type": "surety_bond",
"type_code": "3",
"form": "BMC-84",
"insurer": "Travelers Casualty and Surety Company of America",
"policy_number": "105917743",
"coverage": 75000,
"effective_date": "2014-01-13"
},
{
"docket": "MC135797",
"type": "bipd",
"type_code": "1",
"form": "BMC-91X",
"insurer": "Palisades Insurance Company",
"policy_number": "NONE",
"coverage": 1000000,
"effective_date": "1993-03-01"
}
]
},
"inspections_24m": {
"total": 20263,
"with_oos": 2626
},
"flags": [],
"sources": {
"census": "fmcsa_census",
"authority_insurance": "fmcsa_motus"
},
"data_as_of": {
"census": "2026-09-13T07:08:36.000Z",
"authority_insurance": "2026-10-09T14:34:43.000Z"
},
"disclaimer": "Provided for information only. Not a compliance determination; confirm official status before dispatch."
}
curl --location --request GET 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34849/get+carrier+by+usdot&USDOT=Required' --header 'Authorization: Bearer YOUR_API_KEY'
{
"docket": "MC138328",
"carriers": [
{
"usdot": "53467",
"legal_name": "WERNER ENTERPRISES INC",
"dba_name": null,
"operation": {
"carrier_operation": "A",
"hazmat": false,
"passenger": false,
"authorized_for_hire": true,
"exempt_for_hire": false,
"private_only": false
},
"address": {
"physical": {
"street": "14507 FRONTIER ROAD",
"city": "OMAHA",
"state": "NE",
"zip": "68138",
"country": "US"
},
"mailing": {
"street": "PO BOX 45308",
"city": "OMAHA",
"state": "NE",
"zip": "68145-0308",
"country": "US"
}
},
"contact": {
"phone": "(402) 895-6640",
"fax": "(402) 894-3769",
"email": "[email protected]"
},
"fleet": {
"power_units": 9851,
"drivers": 9107
},
"registration": {
"added_date": "1974-06-01",
"days_registered": 19121,
"mcs150_date": "2024-07-23"
},
"authority": [
{
"docket": "MC138328",
"type": "Motor Carrier of Property (Except Household Goods)",
"status": "Active"
},
{
"docket": "MC138328",
"type": "Broker of Property (Except Household Goods)",
"status": "Active"
}
],
"insurance": {
"bipd_required": 1000000,
"bipd_on_file": 5000000,
"cargo_required": false,
"cargo_on_file": false,
"bond_required": true,
"bond_on_file": true,
"filings": [
{
"docket": "MC138328",
"type": "bipd",
"type_code": "1",
"form": "BMC-91X",
"insurer": "Ace American Insurance Company",
"policy_number": "XSAH11428927",
"coverage": 4000000,
"effective_date": "2025-08-01"
},
{
"docket": "MC138328",
"type": "bipd",
"type_code": "1",
"form": "BMC-91X",
"insurer": "Self-Insured",
"policy_number": "0",
"coverage": 1000000,
"effective_date": "1998-06-10"
},
{
"docket": "MC138328",
"type": "surety_bond",
"type_code": "3",
"form": "BMC-84",
"insurer": "Travelers Casualty and Surety Company of America",
"policy_number": "106001707",
"coverage": 75000,
"effective_date": "2013-10-01"
},
{
"docket": "MC138328",
"type": "bipd",
"type_code": "1",
"form": "BMC-91X",
"insurer": "Palisades Insurance Company",
"policy_number": "00000",
"coverage": 1000000,
"effective_date": "1993-03-15"
}
]
},
"inspections_24m": {
"total": 11701,
"with_oos": 1369
},
"flags": [
"mcs150_outdated"
],
"sources": {
"census": "fmcsa_census",
"authority_insurance": "fmcsa_motus"
},
"data_as_of": {
"census": "2026-09-13T07:08:36.000Z",
"authority_insurance": "2026-10-07T10:58:30.000Z"
}
}
],
"disclaimer": "Provided for information only. Not a compliance determination; confirm official status before dispatch."
}
curl --location --request GET 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34850/get+carrier+by+mc&MC=Required' --header 'Authorization: Bearer YOUR_API_KEY'
{
"query": "werner enterprises",
"count": 1,
"results": [
{
"usdot": "53467",
"legal_name": "WERNER ENTERPRISES INC",
"dba_name": null,
"city": "OMAHA",
"state": "NE",
"power_units": 9851
}
]
}
curl --location --request GET 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34851/search+carriers?name=werner enterprises&state=NE&limit=10' --header 'Authorization: Bearer YOUR_API_KEY'
{
"query": {
"plate": "AF60214",
"state": "PA"
},
"vehicle": {
"vins": [
"1NKWXPTX1KJ245229"
],
"plates": [
{
"plate": "AF60214",
"state": "PA"
}
],
"make": "KW"
},
"carriers": [
{
"usdot": "1398624",
"name_at_inspection": "DMP TRUCKING INC",
"inspections": 4,
"first_seen": "2024-02-02",
"last_seen": "2025-12-23"
}
],
"coverage_note": "Vehicle data comes from roadside inspection records. A vehicle that has never been inspected will not be found."
}
curl --location --request GET 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34852/find+vehicle?plate=AF60214&state=PA' --header 'Authorization: Bearer YOUR_API_KEY'
{
"usdot": "1398624",
"query": {
"vin": "1NKWXPTX1KJ245229"
},
"result": "match",
"evidence": {
"usdot": "1398624",
"name_at_inspection": "DMP TRUCKING INC",
"inspections": 4,
"first_seen": "2024-02-02",
"last_seen": "2025-12-23"
},
"vehicle": {
"vins": [
"1NKWXPTX1KJ245229"
],
"plates": [
{
"plate": "AF60214",
"state": "PA"
}
],
"make": "KW"
},
"coverage_note": "Vehicle data comes from roadside inspection records. A vehicle that has never been inspected will not be found.",
"disclaimer": "Provided for information only. Not a compliance determination; confirm official status before dispatch."
}
curl --location --request GET 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34853/verify+truck?usdot=1398624&plate=AF60214&state=PA&vin=1NKWXPTX1KJ245229' --header 'Authorization: Bearer YOUR_API_KEY'
{
"verdict": "good",
"usdot": "1398624",
"legal_name": "DMP TRUCKING INC",
"strict": false,
"summary": "Good: authority active, insurance OK, truck matches (4 inspections, last seen 2025-12-23). 1 warning.",
"reasons": [],
"warnings": [
"authority_data_from_frozen_legacy_files"
],
"checks": [
{
"check": "census",
"status": "pass"
},
{
"check": "authority",
"status": "pass"
},
{
"check": "insurance",
"status": "pass"
},
{
"check": "registration_age",
"status": "pass"
},
{
"check": "mcs150",
"status": "pass"
},
{
"check": "inspections",
"status": "pass"
},
{
"check": "data_source",
"status": "warn"
},
{
"check": "truck",
"status": "pass"
}
],
"carrier": {
"authority_active": true,
"insurance_ok": true,
"flags": [
"authority_data_from_frozen_legacy_files"
],
"authority": [
{
"docket": "MC558665",
"type": "common",
"status": "Active",
"application_pending": false,
"revocation_pending": false
}
],
"insurance": {
"bipd_required": 750000,
"bipd_on_file": 750000,
"cargo_required": false,
"cargo_on_file": false,
"bond_required": false,
"bond_on_file": false
},
"days_registered": 7744,
"inspections_24m": {
"total": 3,
"with_oos": 0
}
},
"truck": {
"result": "match",
"verified": true,
"last_seen": "2025-12-23",
"inspections": 4,
"most_recent_carrier": null
},
"data_as_of": {
"census": "2026-09-13T07:08:36.000Z",
"authority_insurance": "2026-10-07T10:58:30.000Z"
},
"disclaimer": "Provided for information only. Not a compliance determination; confirm official status before dispatch."
}
curl --location --request GET 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34854/check+pickup?usdot=1398624&plate=AF60214&state=PA&strict=false' --header 'Authorization: Bearer YOUR_API_KEY'
{
"count": 2,
"results": [
{
"usdot": "53467",
"legal_name": "WERNER ENTERPRISES INC",
"dba_name": null,
"operation": {
"carrier_operation": "A",
"hazmat": false,
"passenger": false,
"authorized_for_hire": true,
"exempt_for_hire": false,
"private_only": false
},
"address": {
"physical": {
"street": "14507 FRONTIER ROAD",
"city": "OMAHA",
"state": "NE",
"zip": "68138",
"country": "US"
},
"mailing": {
"street": "PO BOX 45308",
"city": "OMAHA",
"state": "NE",
"zip": "68145-0308",
"country": "US"
}
},
"contact": {
"phone": "(402) 895-6640",
"fax": "(402) 894-3769",
"email": "[email protected]"
},
"fleet": {
"power_units": 9851,
"drivers": 9107
},
"registration": {
"added_date": "1974-06-01",
"days_registered": 19121,
"mcs150_date": "2024-07-23"
},
"authority": [
{
"docket": "MC138328",
"type": "Motor Carrier of Property (Except Household Goods)",
"status": "Active"
},
{
"docket": "MC138328",
"type": "Broker of Property (Except Household Goods)",
"status": "Active"
}
],
"insurance": {
"bipd_required": 1000000,
"bipd_on_file": 5000000,
"cargo_required": false,
"cargo_on_file": false,
"bond_required": true,
"bond_on_file": true,
"filings": [
{
"docket": "MC138328",
"type": "bipd",
"type_code": "1",
"form": "BMC-91X",
"insurer": "Ace American Insurance Company",
"policy_number": "XSAH11428927",
"coverage": 4000000,
"effective_date": "2025-08-01"
},
{
"docket": "MC138328",
"type": "bipd",
"type_code": "1",
"form": "BMC-91X",
"insurer": "Self-Insured",
"policy_number": "0",
"coverage": 1000000,
"effective_date": "1998-06-10"
},
{
"docket": "MC138328",
"type": "surety_bond",
"type_code": "3",
"form": "BMC-84",
"insurer": "Travelers Casualty and Surety Company of America",
"policy_number": "106001707",
"coverage": 75000,
"effective_date": "2013-10-01"
},
{
"docket": "MC138328",
"type": "bipd",
"type_code": "1",
"form": "BMC-91X",
"insurer": "Palisades Insurance Company",
"policy_number": "00000",
"coverage": 1000000,
"effective_date": "1993-03-15"
}
]
},
"inspections_24m": {
"total": 11701,
"with_oos": 1369
},
"flags": [
"mcs150_outdated"
],
"sources": {
"census": "fmcsa_census",
"authority_insurance": "fmcsa_motus"
},
"data_as_of": {
"census": "2026-09-13T07:08:36.000Z",
"authority_insurance": "2026-10-07T10:58:30.000Z"
}
},
{
"usdot": "1398624",
"legal_name": "DMP TRUCKING INC",
"dba_name": "DMP TRUCKING",
"operation": {
"carrier_operation": "A",
"hazmat": false,
"passenger": false,
"authorized_for_hire": true,
"exempt_for_hire": false,
"private_only": false
},
"address": {
"physical": {
"street": "1043 SCHULTZ RD",
"city": "EAST NORRITON",
"state": "PA",
"zip": "19403",
"country": "US"
},
"mailing": {
"street": "PO BOX 121",
"city": "EAGLESVILLE",
"state": "PA",
"zip": "19408",
"country": "US"
}
},
"contact": {
"phone": "(610) 304-0341",
"fax": "(610) 279-1252",
"email": "[email protected]"
},
"fleet": {
"power_units": 1,
"drivers": 1
},
"registration": {
"added_date": "2005-07-25",
"days_registered": 7744,
"mcs150_date": "2025-06-16"
},
"authority": [
{
"docket": "MC558665",
"type": "common",
"status": "Active",
"application_pending": false,
"revocation_pending": false
}
],
"insurance": {
"bipd_required": 750000,
"bipd_on_file": 750000,
"cargo_required": false,
"cargo_on_file": false,
"bond_required": false,
"bond_on_file": false,
"filings": [
{
"docket": "MC558665",
"type": "bipd",
"type_code": "1",
"form": "91X",
"insurer": "EASTERN ATLANTIC INSURANCE COMPANY",
"policy_number": "TEA370124125",
"coverage": 750000,
"effective_date": "2025-10-25"
}
]
},
"inspections_24m": {
"total": 3,
"with_oos": 0
},
"flags": [
"authority_data_from_frozen_legacy_files"
],
"sources": {
"census": "fmcsa_census",
"authority_insurance": "fmcsa_legacy_li_frozen_2026-05-14"
},
"data_as_of": {
"census": "2026-09-13T07:08:36.000Z",
"authority_insurance": "2026-10-07T10:58:30.000Z"
}
}
],
"disclaimer": "Provided for information only. Not a compliance determination; confirm official status before dispatch."
}
curl --location --request POST 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34855/batch+carriers' --header 'Authorization: Bearer YOUR_API_KEY'
--data-raw '{"usdot":["53467","1398624"]}'
{
"id": "wl_2b0da2b6aab9e1ad",
"name": "Core lanes",
"created_at": "2026-10-09T16:15:25.396Z",
"webhook": null,
"added": [
"53467",
"1398624"
],
"already_on_list": [],
"not_found": [],
"usage": {
"plan": "BASIC",
"watched_carriers": 2,
"max_carriers": 10,
"webhooks": false
}
}
curl --location --request POST 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34950/create+watchlist?watchlist_key=zyla-test-watchlist-key-0001' --header 'Authorization: Bearer YOUR_API_KEY'
--data-raw '{"name": "Core lanes", "carriers": ["53467", "1398624"]}'
{
"id": "wl_2b0da2b6aab9e1ad",
"added": [
"2247806"
],
"already_on_list": [],
"not_found": [
"99999999"
],
"usage": {
"plan": "BASIC",
"watched_carriers": 3,
"max_carriers": 10,
"webhooks": false
}
}
curl --location --request POST 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34951/add+carriers+to+watchlist?watchlist_key=zyla-test-watchlist-key-0001&ID=Required' --header 'Authorization: Bearer YOUR_API_KEY'
--data-raw '{"carriers": ["2247806", "99999999"]}'
{
"count": 1,
"watchlists": [
{
"id": "wl_2b0da2b6aab9e1ad",
"name": "Core lanes",
"created_at": "2026-10-09T16:15:25.396Z",
"carriers": 3,
"webhook": null
}
],
"usage": {
"plan": "BASIC",
"watched_carriers": 3,
"max_carriers": 10,
"webhooks": false
}
}
curl --location --request GET 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34952/list+watchlists?watchlist_key=zyla-test-watchlist-key-0001' --header 'Authorization: Bearer YOUR_API_KEY'
{
"id": "wl_2b0da2b6aab9e1ad",
"name": "Core lanes",
"created_at": "2026-10-09T16:15:25.396Z",
"webhook": null,
"carrier_count": 3,
"carriers": [
{
"usdot": "53467",
"legal_name": "WERNER ENTERPRISES INC",
"added_at": "2026-10-09T16:15:25.396Z",
"last_checked": "2026-10-08T18:30:45.073Z",
"last_changed": null
},
{
"usdot": "1398624",
"legal_name": "DMP TRUCKING INC",
"added_at": "2026-10-09T16:15:25.396Z",
"last_checked": "2026-10-08T18:30:45.073Z",
"last_changed": null
},
{
"usdot": "2247806",
"legal_name": "KISHK TRANSPORTATION, INC.",
"added_at": "2026-10-09T16:23:08.378Z",
"last_checked": "2026-10-09T16:23:08.378Z",
"last_changed": null
}
],
"next_cursor": null,
"usage": {
"plan": "BASIC",
"watched_carriers": 3,
"max_carriers": 10,
"webhooks": false
}
}
curl --location --request GET 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34953/get+watchlist?watchlist_key=zyla-test-watchlist-key-0001&ID=Required' --header 'Authorization: Bearer YOUR_API_KEY'
{
"id": "wl_2b0da2b6aab9e1ad",
"name": "Core lanes",
"created_at": "2026-10-09T16:15:25.396Z",
"webhook": null
}
curl --location --request PATCH 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34954/update+watchlist?watchlist_key=zyla-test-watchlist-key-0001&ID=Required' --header 'Authorization: Bearer YOUR_API_KEY'
--data-raw '{"name": "Core lanes", "webhook_min_severity": "high"}'
{
"watchlist_id": "wl_2b0da2b6aab9e1ad",
"since": "2026-10-02T16:37:02.295Z",
"min_severity": "low",
"last_checked": "2026-10-09T16:23:08.378Z",
"count": 0,
"changes": [],
"next_cursor": null,
"disclaimer": "Provided for information only. Not a compliance determination; confirm official status before dispatch."
}
curl --location --request GET 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34955/get+watchlist+changes?watchlist_key=zyla-test-watchlist-key-0001&since=7d&min_severity=low&ID=Required' --header 'Authorization: Bearer YOUR_API_KEY'
{
"watchlist_id": "wl_2b0da2b6aab9e1ad",
"count": 0,
"deliveries": []
}
curl --location --request GET 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34956/list+watchlist+deliveries?watchlist_key=zyla-test-watchlist-key-0001&ID=Required' --header 'Authorization: Bearer YOUR_API_KEY'
{
"id": "wl_2b0da2b6aab9e1ad",
"removed": "2247806",
"usage": {
"plan": "BASIC",
"watched_carriers": 2,
"max_carriers": 10,
"webhooks": false
}
}
curl --location --request DELETE 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34957/remove+carrier+from+watchlist?watchlist_key=zyla-test-watchlist-key-0001&ID=Required&/carriers/=Required&USDOT=Required' --header 'Authorization: Bearer YOUR_API_KEY'
{
"id": "wl_2b0da2b6aab9e1ad",
"deleted": true
}
curl --location --request DELETE 'https://zylalabs.com/api/14105/fmcsa+carrier+check+api/34958/delete+watchlist?watchlist_key=zyla-test-watchlist-key-0001&ID=Required' --header 'Authorization: Bearer YOUR_API_KEY'
After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the FMCSA Carrier Check API simply include your bearer token in the Authorization header.
| Header | Description |
|---|---|
Authorization
|
Required
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Carrier change alerts via watchlists, one-call good/bad pickup check, truck lookup by plate or VIN, 100-carrier batches. Plus USDOT/MC lookups: authority, insurance, safety flags.
All data comes from FMCSA public datasets. Operating authority and insurance come from FMCSA's Motus system and update daily. Census data such as identity and fleet size updates about monthly. Every response includes data_as_of timestamps, and responses are cached for up to 6 hours.
Use the Verify Truck endpoint with the USDOT number you booked and the plate and state or the VIN of the truck. It checks FMCSA roadside inspection records and returns match, seen_under_carrier, different_carrier or not_found, with inspection counts and dates as evidence. The Check Pickup endpoint does this plus the authority and insurance check in one call and returns a verdict with reasons.
No. Plate and VIN results come from roadside inspection records, so a truck that has never been inspected will not be found. Try the VIN if a plate is not found, since plates change and VINs do not. The data is for information only and is not a legal or compliance determination.
Each endpoint returns detailed carrier information, including identity, operation, fleet size, authority, insurance status, inspection counts, and risk flags. For example, the Get Carrier by USDOT endpoint provides a full profile based on the USDOT number, while the Find Vehicle endpoint returns inspection history linked to a specific truck or trailer.
Key fields include "usdot," "legal_name," "operation" (with subfields like "authorized_for_hire"), "address," "contact," and "fleet" (showing power units and drivers). Each endpoint's response structure varies slightly but generally includes these essential fields for comprehensive carrier profiles.
Create a watchlist with the Create Watchlist endpoint and add carriers by USDOT number. Every day, after the FMCSA data refresh, each watched carrier is compared with its previous record, and every difference is saved as a change with a severity: critical (authority inactive or revoked soon, insurance below the required minimum or cancelled), high (phone or email), medium (name or address) or low (renewals, large fleet changes). Call Get Watchlist Changes once a day to read what changed, filtering with since and min_severity.
Each endpoint provides unique data: Get Carrier by USDOT and MC return full carrier profiles; Search Carriers allows searching by name; Find Vehicle shows inspection history; Verify Truck checks truck ownership; Check Pickup assesses carrier authority and insurance; Batch Carriers retrieves multiple profiles in one request.
Parameters vary by endpoint. For example, Get Carrier by USDOT requires a USDOT number, while Find Vehicle accepts a license plate and state or VIN. The Check Pickup endpoint allows a strict mode parameter to enforce stricter validation. Users can customize requests based on their specific needs.
Every watchlist call needs the watchlist_key parameter. It is a secret that you choose yourself, 16 to 200 characters, for example a random string from a password generator. It identifies your watchlists, so keep it private and send the same key on every watchlist call. Anyone who has the key can read and change those watchlists. Watchlists on this listing hold up to 10 carriers and are read by pulling Get Watchlist Changes.
Data accuracy is maintained through regular updates from FMCSA public datasets. The API utilizes the Motus system for authority and insurance data, ensuring that information is current. Additionally, each response includes "data_as_of" timestamps to indicate the freshness of the data.
Typical use cases include verifying carrier compliance before shipment, checking vehicle inspection history for safety assessments, and conducting due diligence on carriers during freight booking. The API supports logistics companies, brokers, and fleet managers in making informed decisions.
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