Real world company prefixes
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Y2 YA YB YC YD YE YF YG YH YI YJ YK YL YM YN YO YP YR YS YT YU YV YW YX YY YZ
YSA YSB YSC YSD YSE YSF YSH YSI YSJ YSL YSM YSN YSR YSS YST YSU YSV
Y2 YA YB YC YD YE YF YG YH YI YJ YK YL YM YN YO YP YR YS YT YU YV YW YX YY YZ
YSA YSB YSC YSD YSE YSF YSH YSI YSJ YSL YSM YSN YSR YSS YST YSU YSV
| 1 | YS | Youngstown & Suburban Ry. Co. | 4/38-1/52; 10/57-4/70 | NRHS | |
| 2 | YS | (PLW) PL&W RAILROAD CO., INC. [YOUNGSTOWN & SOUTHERN RWY.; YOUNGSTOWN & SUBURBAN RWY. CO.] | PWRC | ||
| 3 | YS | Youngstown & Suburban Ry. Co. | 4/1938-4/1970 | NAKINA | |
| 4 | YS | Youngstown & Southern Ry. Co. | 1/1975-1/1980; eliminated 7/1993; 1/1994-7/2005 (not listed) | NAKINA | |
| 5 | YS | Youngstown and Southern Railway | RSRV | ||
| 6 | YS | Youngstown & Southern Ry. Co. | 1/75-1/80; eliminated 7/93; 1/94-7/2000 | NRHS | |
| 7 | YSAA | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 8 | YSAB | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 9 | YSAD | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 10 | YSAH | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 11 | YSAL | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 12 | YSAM | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 13 | YSAM | YANEZ SAIZ, ABRAHAM | SCAC4 | ||
| 14 | YSAZ | NIPPON LINER SYSTEM | PWRC | ||
| 15 | YSAZ | Nippon Liner System Limited | RSRV | ||
| 16 | YSAZ | NIPPON LINER SYSTEM | SCAC4 | ||
| 17 | YSB | YORKE & SON BARGE | PWRC | ||
| 18 | YSB | YORK & SOU BARGE | SCAC4 | ||
| 19 | YSCC | YOUNG SEA CARGO CORP. | SCAC4 | ||
| 20 | YSCL | YUYO STEAMSHIP CO LTD, TOKYO JAPAN | SCAC4 | ||
| 21 | YSCM | YOBEL SUPPLY CHAIN MANAGEMENT INC | SCAC4 | ||
| 22 | YSCU | YANGHAI SHIPPING CO LTD | SCAC4 | ||
| 23 | YSDA | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 24 | YSDF | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 25 | YSDU | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 26 | YSDU | Yamashita-Shinnihon Line | RSRV | ||
| 27 | YSDU | YASUDA WAREHOUSE CO LTD, THE | SCAC4 | ||
| 28 | YSDX | The Youngstown Steel Door Co. | 1/80; eliminated 1/83 | NRHS | |
| 29 | YSDX | YOUNGSTOWN STEEL DOOR CO. | PWRC | ||
| 30 | YSDX | The Youngstown Steel Door Co. | added 10/1976; 1/1980; eliminated 1/1983 | NAKINA | |
| 31 | YSDX | Youngstown Steel Door | RSRV | ||
| 32 | YSET | Y SEVEN E (Y7E) TRANSPORT INC | SCAC4 | ||
| 33 | YSFD | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 34 | YSFF | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 35 | YSFM | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 36 | YSHL | YISHUN LOGISTICS (USA) INC | SCAC4 | ||
| 37 | YSIC | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 38 | YSIC | YOUNKIN & SONS INC | SCAC4 | ||
| 39 | YSIP | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 40 | YSJU | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 41 | YSJU | Yamashita-Shinnihon Line | RSRV | ||
| 42 | YSLD | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 43 | YSLM | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 44 | YSLN | YOU SUNG LINE | SCAC4 | ||
| 45 | YSLR | Yolo Shortline R.R. Co. | added 4/91; eliminated 7/91; 1/94-7/2000 | NRHS | |
| 46 | YSLR | YOLO SHORTLINE RAILROAD COMPANY | PWRC | ||
| 47 | YSLR | Yolo Shortline R.R. Co. | added 4/1991; eliminated 7/1991; 1/1994-7/2005 | NAKINA | |
| 48 | YSLR | Yolo Shortline Railroad | RSRV | ||
| 49 | YSLR | YOLO SHORTLINE RAILROAD CO | SCAC4 | ||
| 50 | YSLT | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 51 | YSLU | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 52 | YSLU | Yamashita-Shinnihon Line | RSRV | ||
| 53 | YSLU | YAMASHITA SHINIHON STEAMSHIP CO | SCAC4 | ||
| 54 | YSLW | YELLOWBLUE SHIPPING LTD | SCAC4 | ||
| 55 | YSLZ | (YSLU) YAMASHITA-SHINNIHON LINE | PWRC | ||
| 56 | YSLZ | Yamashita-Shinnihon Line | RSRV | ||
| 57 | YSLZ | YAMASHITA-SHINNIH | SCAC4 | ||
| 58 | YSMS | YOUR SPORTS MEMORABILIA STORE | SCAC4 | ||
| 59 | YSMX | Panama Gypsum Co. | added 1/62; 7/65-1/75; eliminated 4/76 | NRHS | |
| 60 | YSMX | RETIRED09-29-92 ATP (1676) [CANADIAN GYPSUM CO. LTD.; PANAMA GYPSUM CO.] | PWRC | ||
| 61 | YSMX | Panama Gypsum Co. | added 1/1962; 7/1965-1/1975; eliminated 4/1976 | NAKINA | |
| 62 | YSMX | Canadian Gypsum Co., Ltd. | added 4/1976; 1/1980; eliminated 4/1991 | NAKINA | |
| 63 | YSMX | Canadian Gypsum | RSRV | ||
| 64 | YSMX | Canadian Gypsum Co., Ltd. | added 4/76; 1/80; eliminated 4/91 | NRHS | |
| 65 | YSNA | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 66 | YSRR | YOUNGSTOWN & SOUTHEASTERN RAILROAD CO., INC. | PWRC | ||
| 67 | YSRR | YOUNGSTOWN & SOUTHEASTERN RAILROAD | SCAC4 | ||
| 68 | YSSW | YANAM SERVICES SA | SCAC4 | ||
| 69 | YST | YOUNGSTOWN SHEET & TUBE CO. | PWRC | ||
| 70 | YST | YOUNGS TRANSPORTATION | SCAC4 | ||
| 71 | YSTD | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 72 | YSTK | YORK STATION TRUCKING | SCAC4 | ||
| 73 | YSTM | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 74 | YSTN | YELLE, SYLVAIN TRANSPORT | SCAC4 | ||
| 75 | YSTP | YOSEMITY SAM TRANSPORT | SCAC4 | ||
| 76 | YSTR | YES TRANSPORT | SCAC4 | ||
| 77 | YSTS | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 78 | YSTT | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 79 | YSTU | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 80 | YSTU | Yamashita-Shinnihon Line | RSRV | ||
| 81 | YSTX | The Youngstown Sheet & Tube Co. | 4/38-1/80 | NRHS | |
| 82 | YSTX | RETIRED 02-19-91 FET (ACI 1677) [YOUNGSTOWN SHEET & TUBE CO.] | PWRC | ||
| 83 | YSTX | The Youngstown Sheet & Tube Co. | 8/1920-4/1970; eliminated 7/1972; 1/1975-1/1980 | NAKINA | |
| 84 | YSTX | Youngstown Sheet and Tube | RSRV | ||
| 85 | YSUF | YAMASHITA-SHINNIHON LINE | PWRC | ||
| 86 | YSVR | YELLOWSTONE VALLEY RAILROAD, INC. | PWRC | ||
| 87 | YSVR | Yellowstone Valley R.R. Inc. | added 4/2008 | NAKINA |