IPv4 R&E Routing Table Report 21:35 GMT Tue 05 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: 1044567 Prefixes after maximum aggregation (per Origin AS): 400879 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 515917 Number of IPv4 prefixes with a valid ROA: 640198 Number of IPv4 prefixes with an invalid ROA: 157 Number of IPv4 prefixes with no ROA: 404212 Total ASes present in the Internet Routing Table: 78482 Prefixes per ASN: 13.31 Origin-only ASes present in the Internet Routing Table: 67183 Origin ASes announcing only one prefix: 27416 Transit ASes present in the Internet Routing Table: 11299 Transit-only ASes present in the Internet Routing Table: 594 Paths with bogon ASNs present in the IPv4 Routing Table: 284 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: 1099 Number of instances of unregistered ASNs: 1129 Number of 32-bit ASNs allocated by the RIRs: 49618 Number of 32-bit ASNs visible in the Routing Table: 40547 Prefixes from 32-bit ASNs in the Routing Table: 228667 Number of bogon 32-bit ASNs visible in the Routing Table: 84 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 426 Number of addresses announced to Internet: 3103167744 Equivalent to 184 /8s, 246 /16s and 149 /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: 340909 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 283783 Total APNIC prefixes after maximum aggregation: 82722 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 270022 Unique aggregates announced from the APNIC address blocks: 107831 APNIC Region origin ASes present in the Internet Routing Table: 15190 APNIC Prefixes per ASN: 17.78 APNIC Region origin ASes announcing only one prefix: 4648 APNIC Region transit ASes present in the Internet Routing Table: 2055 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: 10768 Number of APNIC addresses announced to Internet: 747618560 Equivalent to 44 /8s, 143 /16s and 193 /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: 303677 Total ARIN prefixes after maximum aggregation: 136574 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 302991 Unique aggregates announced from the ARIN address blocks: 147552 ARIN Region origin ASes present in the Internet Routing Table: 19448 ARIN Prefixes per ASN: 15.58 ARIN Region origin ASes announcing only one prefix: 7120 ARIN Region transit ASes present in the Internet Routing Table: 1966 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: 5570 Number of ARIN addresses announced to Internet: 1348081920 Equivalent to 80 /8s, 90 /16s and 25 /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: 289957 Total RIPE prefixes after maximum aggregation: 143052 RIPE Deaggregation factor: 2.03 Prefixes being announced from the RIPE address blocks: 293112 Unique aggregates announced from the RIPE address blocks: 190842 RIPE Region origin ASes present in the Internet Routing Table: 29465 RIPE Prefixes per ASN: 9.95 RIPE Region origin ASes announcing only one prefix: 12208 RIPE Region transit ASes present in the Internet Routing Table: 4078 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: 13389 Number of RIPE addresses announced to Internet: 733137152 Equivalent to 43 /8s, 178 /16s and 201 /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: 128767 Total LACNIC prefixes after maximum aggregation: 30809 LACNIC Deaggregation factor: 4.18 Prefixes being announced from the LACNIC address blocks: 123229 Unique aggregates announced from the LACNIC address blocks: 50272 LACNIC Region origin ASes present in the Internet Routing Table: 11385 LACNIC Prefixes per ASN: 10.82 LACNIC Region origin ASes announcing only one prefix: 2710 LACNIC Region transit ASes present in the Internet Routing Table: 2602 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: 9434 Number of LACNIC addresses announced to Internet: 169830912 Equivalent to 10 /8s, 31 /16s and 106 /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: 37284 Total AfriNIC prefixes after maximum aggregation: 7037 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 54786 Unique aggregates announced from the AfriNIC address blocks: 19052 AfriNIC Region origin ASes present in the Internet Routing Table: 2018 AfriNIC Prefixes per ASN: 27.15 AfriNIC Region origin ASes announcing only one prefix: 730 AfriNIC Region transit ASes present in the Internet Routing Table: 392 Average AfriNIC Region AS path length visible: 6.1 Max AfriNIC Region AS path length visible: 63 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1386 Number of AfriNIC addresses announced to Internet: 104303360 Equivalent to 6 /8s, 55 /16s and 139 /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 13862 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5884 826 483 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4935 551 321 BBIL-AP BHARTI Airtel Ltd., IN 18403 4544 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4065 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3688 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 17561 3676 231 600 LCS-AS-AP LARUS Limited, HK 56046 3538 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3359 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2903 813 660 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 14942 41293 5690 AMAZON-02 - Amazon.com, Inc., US 22773 4762 3114 353 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4652 309 1048 CABLEONE - CABLE ONE, INC., US 7155 3870 286 90 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3716 1305 75 SHAW - Shaw Communications, CA 396982 3336 4864 505 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3138 54728 2389 DNIC-AS-00749 - United States Department 36352 2721 222 905 AS-COLOCROSSING - HostPapa, US 7029 2629 2559 918 WINDSTREAM - Windstream Communications LL 30036 2612 358 449 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 7187 1711 149 UNI2-AS, ES 39891 4976 307 73 ALJAWWALSTC-AS, SA 20940 3922 3389 111 AKAMAI-ASN1, NL 9009 3838 353 2259 M247, RO 12389 3146 2321 874 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2765 202 2037 CDNEXT, GB 34984 2453 365 581 TELLCOM-AS, TR 8452 1709 1852 14 TE-AS TE-AS, EG 203020 1655 252 831 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 12768 3282 637 UNINET, MX 10620 3429 450 1105 Telmex Colombia S.A., CO 13999 2428 506 351 Mega Cable, S.A. de C.V., MX 11830 1936 369 65 Instituto Costarricense de Electricidad y 11664 1448 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1375 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1228 379 23 INTEGRATEL PERU S.A.A., PE 26615 1073 2392 100 TIM SA, BR 22884 1072 70 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 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 2027 649 36 RAYA-AS, EG 36992 1860 1533 334 ETISALAT-MISR, EG 24863 1271 389 16 LINKdotNET-AS, EG 36935 1237 520 41 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1116 1100 11 MOBINIL, EG 29571 1070 70 18 ORANGE-COTE-IVOIRE, CI 20011 643 173 262 NTT-DATA-Inc, ZA 328608 572 53 155 Africa-on-Cloud-AS, ZA 36914 557 82 3 KENET-AS, 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 14942 41293 5690 AMAZON-02 - Amazon.com, Inc., US 9808 13862 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12768 3282 637 UNINET, MX 12479 7187 1711 149 UNI2-AS, ES 7545 5884 826 483 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4976 307 73 ALJAWWALSTC-AS, SA 9498 4935 551 321 BBIL-AP BHARTI Airtel Ltd., IN 22773 4762 3114 353 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4652 309 1048 CABLEONE - CABLE ONE, INC., US 18403 4544 347 25 FPT-AS-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 13862 13741 CHINAMOBILE-CN China Mobile Communications Grou 8151 12768 12131 UNINET, MX 12479 7187 7038 UNI2-AS, ES 7545 5884 5401 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4976 4903 ALJAWWALSTC-AS, SA 9498 4935 4614 BBIL-AP BHARTI Airtel Ltd., IN 18403 4544 4519 FPT-AS-AP FPT Telecom Company, VN 22773 4762 4409 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4065 4037 VIETEL-AS-AP Viettel Group, VN 20940 3922 3811 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 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887 - C 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 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En Complete listing at https://bgp.nsrc.org/REN/USP/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 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 23.140.216.0/24 Origin: 27176 DATAWAGON - DataWagon LLC, US 23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS - UnReal Servers, LLC, US 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 /12:297 /13:584 /14:1191 /15:2112 /16:13608 /17:8315 /18:13339 /19:25449 /20:45801 /21:52438 /22:113616 /23:107856 /24:659796 /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 6972 12768 UNINET, MX 12479 6127 7187 UNI2-AS, ES 39891 3660 4976 ALJAWWALSTC-AS, SA 11492 3517 4652 CABLEONE - CABLE ONE, INC., US 6327 3497 3716 SHAW - Shaw Communications, CA 22773 3057 4762 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2825 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2674 14942 AMAZON-02 - Amazon.com, Inc., US 30036 2266 2612 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2233 3429 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/USP/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2485 2:2039 3:1007 4:5 5:5092 6:200 7:6 8:1491 9:43 11:172 12:1182 13:717 14:2706 15:462 16:208 17:441 18:922 20:606 21:4 22:188 23:8319 24:2779 25:2 27:2820 28:1 29:19 31:3494 32:36 34:86 35:284 36:4733 37:4445 38:9657 39:1295 40:440 41:4578 42:2170 43:3114 44:452 45:19777 46:4887 47:413 48:127 49:2233 50:2015 51:678 52:1319 54:280 55:1208 56:11 57:324 58:2339 59:1374 60:1175 61:3150 62:3127 63:1691 64:6338 65:2136 66:6123 67:3266 68:1500 69:4213 70:1052 71:615 72:3172 74:3050 75:1500 76:595 77:2935 78:2018 79:1791 80:2350 81:2237 82:4158 83:1456 84:2149 85:3836 86:1090 87:2497 88:1334 89:4806 90:816 91:8462 92:2798 93:3027 94:4399 95:4735 96:1454 97:310 98:943 99:828 100:70 101:1463 102:4516 103:32509 104:5380 105:856 106:900 107:2881 108:1254 109:4253 110:2282 111:4127 112:3178 113:1975 114:2283 115:2331 116:2146 117:3490 118:3044 119:2062 120:2714 121:1555 122:2995 123:2307 124:1656 125:2987 126:126 128:1611 129:980 130:1662 131:2485 132:884 133:486 134:1672 135:605 136:1540 137:1557 138:3355 139:1621 140:1768 141:1737 142:2556 143:2114 144:1775 145:637 146:2194 147:2253 148:2808 149:3082 150:1367 151:2912 152:2336 153:1575 154:9869 155:2311 156:4983 157:2330 158:1580 159:2867 160:3827 161:1963 162:4052 163:2547 164:2405 165:2665 166:1281 167:2300 168:4018 169:874 170:5586 171:1137 172:4776 173:3461 174:882 175:1355 176:3875 177:4874 178:4396 179:2330 180:3054 181:4571 182:4031 183:2833 184:2012 185:21899 186:6071 187:5005 188:4584 189:4521 190:9816 191:1675 192:11488 193:9632 194:7896 195:5824 196:3400 197:3242 198:6277 199:6067 200:8260 201:6391 202:10693 203:10667 204:4790 205:3746 206:4520 207:4008 208:4388 209:5500 210:4768 211:2687 212:5096 213:4122 214:1047 215:47 216:7297 217:3606 218:1700 219:414 220:2191 221:1317 222:939 223:3431 End of report