Basic Markout Guidelines Per State
| State | Advance Notice | Markout Validity | Additional Notes |
|---|---|---|---|
| Alabama | 2 business days | 30 days | Call 811 or visit Alabama 811 |
| Alaska | 2 business days | 30 days | Call 811 or visit Alaska 811 |
| Arizona | 2 business days | 30 days | Call 811 or visit Arizona 811 |
| Arkansas | 2 business days | 30 days | Call 811 or visit Arkansas 811 |
| California | 2 business days | 30 days | Call 811 or visit USA North 811 |
| Colorado | 2 business days | 30 days | Call 811 or visit Colorado 811 |
| Connecticut | 2 business days | 30 days | Call 811 or visit Call Before You Dig, Inc. |
| Delaware | 2 business days | 30 days | Call 811 or visit Miss Utility |
| Florida | 2 business days | 30 days | Call 811 or visit Sunshine 811 |
| Georgia | 2 business days | 30 days | Call 811 or visit Georgia 811 |
| Hawaii | 2 business days | 30 days | Call 811 or visit Hawaii 811 |
| Idaho | 2 business days | 30 days | Call 811 or visit Idaho 811 |
| Illinois | 2 business days | 30 days | Call 811 or visit JULIE, Inc. |
| Indiana | 2 business days | 30 days | Call 811 or visit Indiana 811 |
| Iowa | 2 business days | 30 days | Call 811 or visit Iowa One Call |
| Kansas | 2 business days | 30 days | Call 811 or visit Kansas 811 |
| Kentucky | 2 business days | 30 days | Call 811 or visit Kentucky 811 |
| Louisiana | 2 business days | 30 days | Call 811 or visit Louisiana 811 |
| Maine | 2 business days | 30 days | Call 811 or visit Dig Safe Maine |
| Maryland | 2 business days | 30 days | Call 811 or visit Miss Utility |
| Massachusetts | 2 business days | 30 days | Call 811 or visit Dig Safe System, Inc. |
| Michigan | 2 business days | 30 days | Call 811 or visit MISS DIG 811 |
| Minnesota | 2 business days | 30 days | Call 811 or visit Gopher State One Call |
| Mississippi | 2 business days | 30 days | Call 811 or visit Mississippi 811 |
| Missouri | 2 business days | 30 days | Call 811 or visit Missouri One Call |
| Montana | 2 business days | 30 days | Call 811 or visit Montana 811 |
| Nebraska | 2 business days | 30 days | Call 811 or visit Nebraska 811 |
| Nevada | 2 business days | 30 days | Call 811 or visit Nevada 811 |
| New Hampshire | 2 business days | 30 days | Call 811 or visit Dig Safe System, Inc. |
| New Jersey | 3–10 business days | 45 business days | Call 811 or visit NJ 1-Call |
| New Mexico | 2 business days | 30 days | Call 811 or visit New Mexico 811 |
| New York | 2 business days | 30 days | Call 811 or visit New York 811 |
| North Carolina | 3 business days | 30 days | Call 811 or visit North Carolina 811 |
| North Dakota | 2 business days | 30 days | Call 811 or visit North Dakota 811 |
| Ohio | 2 business days | 30 days | Call 811 or visit Ohio 811 |
| Oklahoma | 2 business days | 30 days | Call 811 or visit Oklahoma 811 |
| Oregon | 2 business days | 30 days | Call 811 or visit Oregon 811 |
| Pennsylvania | 2 business days | 30 days | Call 811 or visit Pennsylvania 811 |