A record number of companies are rated according to their LGBT-related employment policies in this year’s Corporate Equality Index from the Human Rights Campaign, which was released Monday. Unlike in previous years, HRC has issued “unofficial” ratings for companies that didn’t respond to its survey. These unofficial ratings are based on publicly available information and information submitted to HRC by unofficial LGBT employee groups or individual employees. As a result, the CEI seems to present a more accurate portrait of workplace equality, because companies that know they’ll score well are more inclined to respond to HRC’s survey, and vice versa.

In North Texas, for example, a total of five companies now receive the lowest possible score of zero from HRC, meaning they don’t provide even the most basic protections, such as a nondiscrimination policy that includes sexual orientation. North Texas-based companies that received a zero in this year’s CEI are ExxonMobil Corp. of Irving, Commercial Metals of Irving, Crosstex Energy Inc. of Dallas, Energy Transfer Partners of Dallas and Holly Corp. of Dallas.

Other notably low unofficial scores were given to Dallas-based Blockbuster (45), Plano-based Dr. Pepper Snapple Group (15)  and Fort Worth-based developer DR Horton Inc. (30).

Also of note, HRC docked Target, Best Buy and 3M 15 points each “for failing to respond to requests to take corrective actions following their sizable contributions to MN Forward, a political committee supporting the election of an anti-gay candidate for governor of Minnesota.”

Below is a full list of HRC-rated companies based in North Texas this year (companies are based in Dallas unless otherwise noted, unofficial scores shaded gray):

Affiliated Computer Services: 60
AMR Corp. (American Airlines, Fort Worth): 100
AT&T: 100
Atmos Energy Corp.: 30
Blockbuster Inc.: 45
Brinker International: 100
Burlington Northern Santa Fe Corp. (Fort Worth): 20
Celanese Corp.: 15
Centex Corp: 15
Comerica Inc. 95
Commercial Metals (Irving): 0
CoreLogic (Westlake): 100
Crosstex Energy Inc.: 0
Dean Foods Co. 73
DR Horton Inc. (Fort Worth): 30
Dr. Pepper Snapple Group (Plano): 15
Energy Future Holdings Corp. 15
Energy Transfer Partners: 0
ExxonMobil Corp. (Irving): 0
Fluor Corp. (Irving): 15
Gamestop Inc. (Grapevine): 100
Haynes and Boone LLP: 100
Holly Corp.: 0
J.C. Penney Co. Inc. (Plano): 100
Kimberly-Clark Corp. (Irving): 100
Nokia Corp. (Irving): 50
Nortel Networks Corp. (Richardson): 85
Perot Systems Corp.: (Plano): 53
RadioShack Corp. (Fort Worth): 40
Sabre Holdings Inc. (Southlake): 100
Southwest Airlines Co.: 95
Tenet Healthcare: 48
Texas Instruments Inc. : 100