IPv4 R&E Routing Table Report 21:35 GMT Sun 18 Oct, 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: 1072573 Prefixes after maximum aggregation (per Origin AS): 415429 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 536245 Number of IPv4 prefixes with a valid ROA: 755991 Number of IPv4 prefixes with an invalid ROA: 226 Number of IPv4 prefixes with no ROA: 316356 Total ASes present in the Internet Routing Table: 79573 Prefixes per ASN: 13.48 Origin-only ASes present in the Internet Routing Table: 68109 Origin ASes announcing only one prefix: 27927 Transit ASes present in the Internet Routing Table: 11464 Transit-only ASes present in the Internet Routing Table: 627 Paths with bogon ASNs present in the IPv4 Routing Table: 334 Average AS path length visible in the Internet Routing Table: 5.5 Max AS path length visible: 86 Max AS path prepend of ASN ( 37447) 81 Prefixes from unregistered ASNs in the Routing Table: 1251 Number of instances of unregistered ASNs: 1274 Number of 32-bit ASNs allocated by the RIRs: 51755 Number of 32-bit ASNs visible in the Routing Table: 41975 Prefixes from 32-bit ASNs in the Routing Table: 243635 Number of bogon 32-bit ASNs visible in the Routing Table: 60 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 589 Number of addresses announced to Internet: 3125894400 Equivalent to 186 /8s, 81 /16s and 93 /24s Percentage of available address space announced: 84.4 Percentage of allocated address space announced: 84.4 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: 355880 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 283622 Total APNIC prefixes after maximum aggregation: 85008 APNIC Deaggregation factor: 3.34 Prefixes being announced from the APNIC address blocks: 272289 Unique aggregates announced from the APNIC address blocks: 110557 APNIC Region origin ASes present in the Internet Routing Table: 15418 APNIC Prefixes per ASN: 17.66 APNIC Region origin ASes announcing only one prefix: 4784 APNIC Region transit ASes present in the Internet Routing Table: 2053 Average APNIC Region AS path length visible: 5.5 Max APNIC Region AS path length visible: 40 Number of APNIC region 32-bit ASNs visible in the Routing Table: 11030 Number of APNIC addresses announced to Internet: 748838912 Equivalent to 44 /8s, 162 /16s and 96 /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: 315666 Total ARIN prefixes after maximum aggregation: 140535 ARIN Deaggregation factor: 2.25 Prefixes being announced from the ARIN address blocks: 312473 Unique aggregates announced from the ARIN address blocks: 153237 ARIN Region origin ASes present in the Internet Routing Table: 19550 ARIN Prefixes per ASN: 15.98 ARIN Region origin ASes announcing only one prefix: 7206 ARIN Region transit ASes present in the Internet Routing Table: 1993 Average ARIN Region AS path length visible: 5.0 Max ARIN Region AS path length visible: 46 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5852 Number of ARIN addresses announced to Internet: 1355417088 Equivalent to 80 /8s, 202 /16s and 6 /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: 301001 Total RIPE prefixes after maximum aggregation: 150032 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 307522 Unique aggregates announced from the RIPE address blocks: 201858 RIPE Region origin ASes present in the Internet Routing Table: 29942 RIPE Prefixes per ASN: 10.27 RIPE Region origin ASes announcing only one prefix: 12397 RIPE Region transit ASes present in the Internet Routing Table: 4167 Average RIPE Region AS path length visible: 5.5 Max RIPE Region AS path length visible: 49 Number of RIPE region 32-bit ASNs visible in the Routing Table: 14018 Number of RIPE addresses announced to Internet: 750377216 Equivalent to 44 /8s, 185 /16s and 217 /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 196608-219547 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: 132258 Total LACNIC prefixes after maximum aggregation: 31898 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 125877 Unique aggregates announced from the LACNIC address blocks: 51732 LACNIC Region origin ASes present in the Internet Routing Table: 11535 LACNIC Prefixes per ASN: 10.91 LACNIC Region origin ASes announcing only one prefix: 2770 LACNIC Region transit ASes present in the Internet Routing Table: 2648 Average LACNIC Region AS path length visible: 6.2 Max LACNIC Region AS path length visible: 39 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9616 Number of LACNIC addresses announced to Internet: 167299328 Equivalent to 9 /8s, 248 /16s and 201 /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: 38775 Total AfriNIC prefixes after maximum aggregation: 7195 AfriNIC Deaggregation factor: 5.39 Prefixes being announced from the AfriNIC address blocks: 53822 Unique aggregates announced from the AfriNIC address blocks: 18380 AfriNIC Region origin ASes present in the Internet Routing Table: 2093 AfriNIC Prefixes per ASN: 25.72 AfriNIC Region origin ASes announcing only one prefix: 770 AfriNIC Region transit ASes present in the Internet Routing Table: 391 Average AfriNIC Region AS path length visible: 6.4 Max AfriNIC Region AS path length visible: 86 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1459 Number of AfriNIC addresses announced to Internet: 103651584 Equivalent to 6 /8s, 45 /16s and 153 /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 14001 8737 135 CHINAMOBILE-CN - China Mobile Communicati 9498 5105 560 331 BBIL-AP - BHARTI Airtel Ltd., IN 7545 4645 842 279 TPG-INTERNET-AP - TPG Telecom Limited, AU 7552 4095 1331 24 VIETEL-AS-AP - Viettel Group, VN 56046 3633 888 183 CMNET-Jiangsu-AP - China Mobile communica 7713 3442 1043 69 telkomnet-as-ap - PT Telekomunikasi Indon 45899 3378 1868 97 VNPT-AS-VN - VNPT Corp, VN 140292 3291 331 1669 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK - 24560 2386 538 665 AIRTELBROADBAND-AS-AP - Bharti Airtel Ltd 4755 2268 428 194 TATACOMM-AS - TATA Communications formerl 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 17781 42613 5623 AMAZON-02 - Amazon.com, Inc., US 22773 4920 3338 463 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4631 308 1099 CABLEONE - CABLE ONE, INC., US 7155 4337 286 87 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3837 1305 74 SHAW - Shaw Communications, CA 396982 3546 5381 599 GOOGLE-CLOUD-PLATFORM - Google LLC, US 36352 3283 244 1154 AS-COLOCROSSING - HostPapa, US 749 3133 54647 2384 DNIC-AS-00749 - United States Department 7029 2908 2571 917 WINDSTREAM - Windstream Communications LL 31898 2826 1408 1185 ORACLE-BMC-31898 - Oracle Corporation, US 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 6950 1709 149 UNI2-AS - Orange Espagne SA, ES 39891 5044 311 77 ALJAWWALSTC-AS - Saudi Telecom Company JS 9009 4370 390 2672 M247 - M247 Europe SRL, RO 20940 3839 3388 105 AKAMAI-ASN1 - Akamai International B.V., 212238 3693 265 2809 CDNEXT - Datacamp Limited, GB 12389 3105 2329 868 ROSTELECOM-AS - PJSC Rostelecom, RU 34984 2528 371 602 TELLCOM-AS - Superonline Iletisim Hizmetl 29355 2525 155 30 KCELL-AS - Kcell JSC, KZ 25019 1928 1384 141 SAUDINETSTC-AS - Saudi Telecom Company JS 3257 1740 2082 979 GTT-BACKBONE - GTT Communications Inc., U 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 13288 3296 616 AS8151 - UNINET, MX 10620 3399 442 1122 AS10620 - Telmex Colombia S.A., CO 13999 2222 493 326 AS13999 - Mega Cable, S.A. de C.V., MX 11830 1852 369 65 AS11830 - Instituto Costarricense de Elec 11664 1512 277 34 AS11664 - Techtel LMDS Comunicaciones Int 28573 1388 2433 268 AS28573 - Claro NXT Telecomunicacoes Ltda 3816 1267 762 225 AS3816 - COLOMBIA TELECOMUNICACIONES S.A. 6147 1174 371 21 AS6147 - INTEGRATEL PERU S.A.A., PE 22884 1098 73 382 AS22884 - TOTAL PLAY TELECOMUNICACIONES, 27715 1079 75 54 AS27715 - Locaweb Servicos de Internet S/ 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 1972 481 26 Vodafone Data - Vodafone Data, EG 36992 1943 1543 326 ETISALAT MISR - ETISALAT MISR, EG 24863 1461 389 20 Link Egypt (Link.NET) - Link Egypt (Link. 36903 1352 588 110 Office National des Postes et Telecommuni 36935 1295 523 49 Vodafone Data - Vodafone Data, EG 37069 1128 1100 11 The Egyptian Company for Mobile Services 29571 1086 70 18 Orange Côte d'Ivoire - Orange Côte d'Iv 15399 806 57 60 Wananchi Group (Kenya) Limited - Wananchi 20011 719 172 287 Dimension Data - Dimension Data, ZA 36873 545 141 39 Airtel Networks Limited - Airtel Networks 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 17781 42613 5623 AMAZON-02 - Amazon.com, Inc., US 9808 14001 8737 135 CHINAMOBILE-CN - China Mobile Communicati 8151 13288 3296 616 AS8151 - UNINET, MX 12479 6950 1709 149 UNI2-AS - Orange Espagne SA, ES 9498 5105 560 331 BBIL-AP - BHARTI Airtel Ltd., IN 39891 5044 311 77 ALJAWWALSTC-AS - Saudi Telecom Company JS 22773 4920 3338 463 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 7545 4645 842 279 TPG-INTERNET-AP - TPG Telecom Limited, AU 11492 4631 308 1099 CABLEONE - CABLE ONE, INC., US 9009 4370 390 2672 M247 - M247 Europe SRL, RO 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 14001 13866 CHINAMOBILE-CN - China Mobile Communications Gr 8151 13288 12672 AS8151 - UNINET, MX 12479 6950 6801 UNI2-AS - Orange Espagne SA, ES 39891 5044 4967 ALJAWWALSTC-AS - Saudi Telecom Company JSC, SA 9498 5105 4774 BBIL-AP - BHARTI Airtel Ltd., IN 22773 4920 4457 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7545 4645 4366 TPG-INTERNET-AP - TPG Telecom Limited, AU 7155 4337 4250 VIASAT-SP-BACKBONE - ViaSat,Inc., US 7552 4095 4071 VIETEL-AS-AP - Viettel Group, VN 6327 3837 3763 SHAW - Shaw Communications, CA 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 4593 UNALLOCATED 2.26.176.0/24 10122 NETSTAR-AS-AP - NETSTAR 4593 UNALLOCATED 2.26.216.0/24 10122 NETSTAR-AS-AP - NETSTAR 4593 UNALLOCATED 2.26.219.0/24 10122 NETSTAR-AS-AP - NETSTAR 394928 UNALLOCATED 8.2.70.0/24 3356 LEVEL3 - Level 3 Parent 23338 UNALLOCATED 8.14.84.0/22 33667 CMCS - Comcast Cable Co 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 8.33.224.0/24 174 COGENT-174 - Cogent Com 396243 UNALLOCATED 8.34.113.0/24 3356 LEVEL3 - Level 3 Parent 397274 UNALLOCATED 8.36.79.0/24 3356 LEVEL3 - Level 3 Parent 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 UNASSIGNED 23.131.100.0/24 Transit: 38733 CMCTELECOM-VN - CMC Telecom Infrastructu 23.131.156.0/24 Origin: 401541 UNASSIGNED 23.131.156.0/24 Transit: 38733 CMCTELECOM-VN - CMC Telecom Infrastructu 23.131.212.0/24 Origin: 401541 UNASSIGNED 23.131.212.0/24 Transit: 38733 CMCTELECOM-VN - CMC Telecom Infrastructu 23.133.212.0/24 Origin: 18604 UNASSIGNED 23.133.212.0/24 Transit: 394625 WHITELABELIT - WhiteLabel IT Solutions C 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, 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 /11:97 /12:299 /13:589 /14:1192 /15:2134 /16:13726 /17:8281 /18:13273 /19:25503 /20:45230 /21:53502 /22:113709 /23:110748 /24:684220 /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 7445 13288 AS8151 - UNINET, MX 12479 5864 6950 UNI2-AS - Orange Espagne SA, ES 39891 3727 5044 ALJAWWALSTC-AS - Saudi Telecom Company JSC, SA 6327 3602 3837 SHAW - Shaw Communications, CA 11492 3509 4631 CABLEONE - CABLE ONE, INC., US 16509 3436 17781 AMAZON-02 - Amazon.com, Inc., US 7155 3268 4337 VIASAT-SP-BACKBONE - ViaSat,Inc., US 22773 3134 4920 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 10620 2234 3399 AS10620 - Telmex Colombia S.A., CO 30036 2182 2528 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) ---------------------------------------------- 1:2023 2:2973 3:1447 4:6 5:5486 6:216 7:6 8:1343 9:506 11:172 12:1077 13:1413 14:2709 15:487 16:374 17:469 18:1292 20:619 21:4 22:188 23:8639 24:2813 25:2 27:2946 28:8 29:19 31:3962 32:33 34:94 35:308 36:4914 37:4435 38:10540 39:1448 40:456 41:4605 42:1048 43:3477 44:534 45:19935 46:5038 47:459 48:171 49:2338 50:2020 51:1040 52:1463 54:495 55:1157 56:11 57:333 58:2282 59:1360 60:1190 61:3284 62:3189 63:1678 64:6738 65:2276 66:6268 67:3338 68:1344 69:4084 70:1085 71:604 72:3291 74:3150 75:1742 76:591 77:2944 78:2178 79:2021 80:2412 81:2308 82:4393 83:1528 84:2172 85:3922 86:1155 87:3015 88:1369 89:4976 90:794 91:8573 92:2806 93:3066 94:4703 95:4777 96:1452 97:304 98:974 99:1153 100:65 101:1373 102:4770 103:32414 104:5804 105:967 106:970 107:3014 108:1522 109:4033 110:2229 111:4231 112:3234 113:1692 114:2631 115:2329 116:2080 117:3901 118:2607 119:2078 120:2826 121:2007 122:3070 123:2225 124:1686 125:2987 126:175 128:1629 129:1013 130:1786 131:2632 132:953 133:483 134:1836 135:679 136:1587 137:1622 138:3460 139:1840 140:1896 141:1921 142:2740 143:2374 144:1931 145:714 146:2262 147:2397 148:2893 149:3590 150:1495 151:3165 152:2515 153:2308 154:8589 155:2373 156:3909 157:2490 158:1648 159:2992 160:4198 161:2157 162:4257 163:2781 164:2505 165:2811 166:1264 167:2417 168:4295 169:992 170:5594 171:1138 172:4954 173:3485 174:898 175:1436 176:4116 177:5641 178:4672 179:2887 180:3347 181:4751 182:4145 183:2661 184:2202 185:22090 186:6590 187:6060 188:4935 189:5042 190:10033 191:2042 192:12006 193:9649 194:7996 195:6025 196:3508 197:3458 198:6507 199:6189 200:8482 201:7013 202:10607 203:10676 204:4843 205:3800 206:4623 207:4041 208:4350 209:5534 210:4688 211:2731 212:5286 213:4141 214:1044 215:52 216:7326 217:3930 218:1922 219:411 220:2228 221:1442 222:973 223:3661 End of report