IPv4 R&E Routing Table Report 21:35 GMT Sun 24 May, 2026 IPv4 BGP Table (Global) as seen at USP. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/USP/ Analysis Summary ---------------- BGP routing table entries examined: 1048456 Prefixes after maximum aggregation (per Origin AS): 402364 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 517766 Number of IPv4 prefixes with a valid ROA: 657639 Number of IPv4 prefixes with an invalid ROA: 154 Number of IPv4 prefixes with no ROA: 390663 Total ASes present in the Internet Routing Table: 78568 Prefixes per ASN: 13.34 Origin-only ASes present in the Internet Routing Table: 67292 Origin ASes announcing only one prefix: 27481 Transit ASes present in the Internet Routing Table: 11276 Transit-only ASes present in the Internet Routing Table: 582 Paths with bogon ASNs present in the IPv4 Routing Table: 282 Average AS path length visible in the Internet Routing Table: 5.3 Max AS path length visible: 69 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 1244 Number of instances of unregistered ASNs: 1274 Number of 32-bit ASNs allocated by the RIRs: 49891 Number of 32-bit ASNs visible in the Routing Table: 40687 Prefixes from 32-bit ASNs in the Routing Table: 230475 Number of bogon 32-bit ASNs visible in the Routing Table: 82 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 422 Number of addresses announced to Internet: 3104198912 Equivalent to 185 /8s, 6 /16s and 81 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 343024 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 284467 Total APNIC prefixes after maximum aggregation: 83020 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 271117 Unique aggregates announced from the APNIC address blocks: 108080 APNIC Region origin ASes present in the Internet Routing Table: 15199 APNIC Prefixes per ASN: 17.84 APNIC Region origin ASes announcing only one prefix: 4643 APNIC Region transit ASes present in the Internet Routing Table: 2046 Average APNIC Region AS path length visible: 5.2 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10784 Number of APNIC addresses announced to Internet: 747720960 Equivalent to 44 /8s, 145 /16s and 81 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 304367 Total ARIN prefixes after maximum aggregation: 137095 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 303214 Unique aggregates announced from the ARIN address blocks: 147814 ARIN Region origin ASes present in the Internet Routing Table: 19429 ARIN Prefixes per ASN: 15.61 ARIN Region origin ASes announcing only one prefix: 7116 ARIN Region transit ASes present in the Internet Routing Table: 1972 Average ARIN Region AS path length visible: 5.0 Max ARIN Region AS path length visible: 36 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5592 Number of ARIN addresses announced to Internet: 1348188416 Equivalent to 80 /8s, 91 /16s and 185 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-404380 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 290739 Total RIPE prefixes after maximum aggregation: 143568 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 294168 Unique aggregates announced from the RIPE address blocks: 191727 RIPE Region origin ASes present in the Internet Routing Table: 29524 RIPE Prefixes per ASN: 9.96 RIPE Region origin ASes announcing only one prefix: 12243 RIPE Region transit ASes present in the Internet Routing Table: 4076 Average RIPE Region AS path length visible: 5.4 Max RIPE Region AS path length visible: 46 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13461 Number of RIPE addresses announced to Internet: 733999872 Equivalent to 43 /8s, 191 /16s and 243 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 130079 Total LACNIC prefixes after maximum aggregation: 30869 LACNIC Deaggregation factor: 4.21 Prefixes being announced from the LACNIC address blocks: 124475 Unique aggregates announced from the LACNIC address blocks: 50352 LACNIC Region origin ASes present in the Internet Routing Table: 11413 LACNIC Prefixes per ASN: 10.91 LACNIC Region origin ASes announcing only one prefix: 2742 LACNIC Region transit ASes present in the Internet Routing Table: 2596 Average LACNIC Region AS path length visible: 6.3 Max LACNIC Region AS path length visible: 69 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9451 Number of LACNIC addresses announced to Internet: 169741056 Equivalent to 10 /8s, 30 /16s and 11 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 37560 Total AfriNIC prefixes after maximum aggregation: 7073 AfriNIC Deaggregation factor: 5.31 Prefixes being announced from the AfriNIC address blocks: 55059 Unique aggregates announced from the AfriNIC address blocks: 19424 AfriNIC Region origin ASes present in the Internet Routing Table: 2035 AfriNIC Prefixes per ASN: 27.06 AfriNIC Region origin ASes announcing only one prefix: 737 AfriNIC Region transit ASes present in the Internet Routing Table: 392 Average AfriNIC Region AS path length visible: 6.0 Max AfriNIC Region AS path length visible: 63 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1399 Number of AfriNIC addresses announced to Internet: 104353024 Equivalent to 6 /8s, 56 /16s and 77 /24s AfriNIC AS Blocks 36864-37887, 327680-330751 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 13916 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5875 825 476 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4938 551 322 BBIL-AP BHARTI Airtel Ltd., IN 18403 4553 347 24 FPT-AP FPT Telecom Company, VN 7552 4059 1331 26 VIETEL-AS-AP Viettel Group, VN 7713 3695 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3543 887 177 CMNET-JIANGSU-AP China Mobile communicati 17561 3473 218 606 LCS-AS-AP LARUS Limited, HK 45899 3371 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2738 745 734 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 15006 41426 5715 AMAZON-02 - Amazon.com, Inc., US 22773 4767 3114 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4592 305 1088 CABLEONE - CABLE ONE, INC., US 7155 3870 286 90 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3716 1305 74 SHAW - Shaw Communications, CA 396982 3350 4865 505 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3138 54728 2389 DNIC-AS-00749 - United States Department 36352 3055 231 1026 AS-COLOCROSSING - HostPapa, US 7029 2638 2558 889 WINDSTREAM - Windstream Communications LL 30036 2580 357 532 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom C Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7135 1711 149 UNI2-AS, ES 39891 4975 307 72 ALJAWWALSTC-AS, SA 9009 4069 371 2472 M247, RO 20940 3914 3389 110 AKAMAI-ASN1, NL 12389 3140 2319 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2798 206 2065 CDNEXT, GB 34984 2489 367 583 TELLCOM-AS, TR 8452 1718 1852 14 TE-AS TE-AS, EG 203020 1651 252 825 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12756 3254 631 UNINET, MX 10620 3432 450 1101 Telmex Colombia S.A., CO 13999 2354 500 354 Mega Cable, S.A. de C.V., MX 11830 1935 369 65 Instituto Costarricense de Electricidad y 11664 1471 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1364 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1224 371 22 INTEGRATEL PERU S.A.A., PE 22884 1077 71 364 TOTAL PLAY TELECOMUNICACIONES, S.A.P.I. D 26615 1073 2392 100 TIM SA, BR Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 2028 649 36 RAYA-AS, EG 36992 1860 1532 337 ETISALAT-MISR, EG 36935 1292 523 45 Vodafone-, EG 24863 1267 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 37069 1116 1100 11 MOBINIL, EG 29571 1086 70 18 ORANGE-COTE-IVOIRE, CI 20011 643 173 262 NTT-DATA-Inc, ZA 328608 636 57 172 Africa-on-Cloud-AS, ZA 15399 561 57 58 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 15006 41426 5715 AMAZON-02 - Amazon.com, Inc., US 9808 13916 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12756 3254 631 UNINET, MX 12479 7135 1711 149 UNI2-AS, ES 7545 5875 825 476 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 307 72 ALJAWWALSTC-AS, SA 9498 4938 551 322 BBIL-AP BHARTI Airtel Ltd., IN 22773 4767 3114 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4592 305 1088 CABLEONE - CABLE ONE, INC., US 18403 4553 347 24 FPT-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13916 13795 CHINAMOBILE-CN China Mobile Communications Grou 8151 12756 12125 UNINET, MX 12479 7135 6986 UNI2-AS, ES 7545 5875 5399 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 4903 ALJAWWALSTC-AS, SA 9498 4938 4616 BBIL-AP BHARTI Airtel Ltd., IN 18403 4553 4529 FPT-AP FPT Telecom Company, VN 22773 4767 4401 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4059 4033 VIETEL-AS-AP Viettel Group, VN 20940 3914 3804 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/USP/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 46198 UNALLOCATED 8.10.6.0/24 23520 LIBERTY-NETWORKS - Colu 46198 UNALLOCATED 8.10.7.0/24 23520 LIBERTY-NETWORKS - Colu 395729 UNALLOCATED 8.28.58.0/24 32787 PROLEXIC-TECHNOLOGIES-D 395729 UNALLOCATED 8.28.60.0/24 32787 PROLEXIC-TECHNOLOGIES-D 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 400273 UNALLOCATED 8.41.137.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com Complete listing at https://bgp.nsrc.org/REN/USP/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.131.100.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.100.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.131.156.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.156.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.131.212.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.212.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.137.48.0/24 Origin: 16904 ARVIG-16904 - Arvig Enterprises Inc., US 23.137.48.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res Complete listing at https://bgp.nsrc.org/REN/USP/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- !!Default route being announced!! /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:39 /11:95 /12:298 /13:583 /14:1190 /15:2118 /16:13604 /17:8287 /18:13361 /19:25483 /20:45805 /21:52409 /22:113490 /23:108617 /24:663046 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8151 6977 12756 UNINET, MX 12479 6071 7135 UNI2-AS, ES 39891 3660 4975 ALJAWWALSTC-AS, SA 6327 3498 3716 SHAW - Shaw Communications, CA 11492 3469 4592 CABLEONE - CABLE ONE, INC., US 22773 3064 4767 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2825 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2714 15006 AMAZON-02 - Amazon.com, Inc., US 10620 2236 3432 Telmex Colombia S.A., CO 30036 2235 2580 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US Complete listing at https://bgp.nsrc.org/REN/USP/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2508 2:2076 3:997 4:5 5:5107 6:203 7:6 8:1475 9:63 11:172 12:1130 13:705 14:2719 15:467 16:215 17:441 18:920 20:611 21:4 22:188 23:8423 24:2776 25:2 27:2821 28:1 29:19 31:3592 32:36 34:87 35:284 36:4778 37:4438 38:9719 39:1307 40:412 41:4560 42:2186 43:3163 44:451 45:19776 46:4904 47:414 48:157 49:2252 50:2028 51:815 52:1332 54:287 55:1103 56:11 57:324 58:2348 59:1366 60:1175 61:3170 62:3142 63:1680 64:6385 65:2147 66:6131 67:3274 68:1514 69:4224 70:1056 71:617 72:3185 74:3067 75:1501 76:598 77:2945 78:2044 79:1788 80:2335 81:2267 82:4171 83:1458 84:2161 85:3850 86:1096 87:2615 88:1317 89:4776 90:794 91:8469 92:2777 93:3032 94:4417 95:4699 96:1445 97:308 98:948 99:841 100:70 101:1466 102:4636 103:32480 104:5422 105:851 106:919 107:2947 108:1279 109:4275 110:2282 111:4123 112:3163 113:2017 114:2533 115:2325 116:2071 117:3589 118:3041 119:2089 120:2739 121:1561 122:3022 123:2293 124:1654 125:2985 126:158 128:1603 129:976 130:1681 131:2435 132:890 133:502 134:1718 135:613 136:1465 137:1565 138:3409 139:1716 140:1846 141:1773 142:2556 143:2046 144:1787 145:637 146:2189 147:2247 148:2795 149:3163 150:1378 151:2926 152:2354 153:1708 154:9601 155:2278 156:5124 157:2444 158:1577 159:2868 160:3855 161:1984 162:4106 163:2601 164:2430 165:2681 166:1261 167:2338 168:4072 169:871 170:5590 171:1139 172:4809 173:3455 174:886 175:1365 176:3937 177:5064 178:4419 179:2377 180:3070 181:4598 182:4048 183:2848 184:2019 185:21855 186:6205 187:5051 188:4515 189:4534 190:9879 191:2006 192:11595 193:9616 194:7853 195:5837 196:3438 197:3235 198:6284 199:6064 200:8287 201:6430 202:10718 203:10686 204:4799 205:3741 206:4447 207:4001 208:4381 209:5506 210:4747 211:2690 212:5089 213:4126 214:1039 215:47 216:7301 217:3623 218:1801 219:413 220:2217 221:1321 222:938 223:3445 End of report