IPv4 R&E Routing Table Report 21:10 GMT Sat 27 Sep, 2025 IPv4 BGP Table (Global) as seen at AARNET (Brisbane). Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/AARNET/ Analysis Summary ---------------- BGP routing table entries examined: 1004301 Prefixes after maximum aggregation (per Origin AS): 389384 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 495670 Number of IPv4 prefixes with a valid ROA: 573683 Number of IPv4 prefixes with an invalid ROA: 147 Number of IPv4 prefixes with no ROA: 430463 Total ASes present in the Internet Routing Table: 77358 Prefixes per ASN: 12.98 Origin-only ASes present in the Internet Routing Table: 66258 Origin ASes announcing only one prefix: 27084 Transit ASes present in the Internet Routing Table: 11100 Transit-only ASes present in the Internet Routing Table: 551 Paths with bogon ASNs present in the IPv4 Routing Table: 5 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 52 Max AS path prepend of ASN ( 59958) 48 Prefixes from unregistered ASNs in the Routing Table: 979 Number of instances of unregistered ASNs: 1008 Number of 32-bit ASNs allocated by the RIRs: 47563 Number of 32-bit ASNs visible in the Routing Table: 39035 Prefixes from 32-bit ASNs in the Routing Table: 210953 Number of bogon 32-bit ASNs visible in the Routing Table: 68 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 433 Number of addresses announced to Internet: 3111562752 Equivalent to 185 /8s, 118 /16s and 174 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 327338 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 268394 Total APNIC prefixes after maximum aggregation: 79512 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 258398 Unique aggregates announced from the APNIC address blocks: 105798 APNIC Region origin ASes present in the Internet Routing Table: 14812 APNIC Prefixes per ASN: 17.45 APNIC Region origin ASes announcing only one prefix: 4509 APNIC Region transit ASes present in the Internet Routing Table: 1981 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10361 Number of APNIC addresses announced to Internet: 751058176 Equivalent to 44 /8s, 196 /16s and 61 /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: 295208 Total ARIN prefixes after maximum aggregation: 133857 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 296460 Unique aggregates announced from the ARIN address blocks: 143030 ARIN Region origin ASes present in the Internet Routing Table: 19323 ARIN Prefixes per ASN: 15.34 ARIN Region origin ASes announcing only one prefix: 7093 ARIN Region transit ASes present in the Internet Routing Table: 1985 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 49 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5345 Number of ARIN addresses announced to Internet: 1352599296 Equivalent to 80 /8s, 159 /16s and 7 /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, 393216-402332 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: 279710 Total RIPE prefixes after maximum aggregation: 138250 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279284 Unique aggregates announced from the RIPE address blocks: 180523 RIPE Region origin ASes present in the Internet Routing Table: 29072 RIPE Prefixes per ASN: 9.61 RIPE Region origin ASes announcing only one prefix: 12092 RIPE Region transit ASes present in the Internet Routing Table: 4023 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 52 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12734 Number of RIPE addresses announced to Internet: 732914688 Equivalent to 43 /8s, 175 /16s and 100 /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: 124919 Total LACNIC prefixes after maximum aggregation: 30241 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121157 Unique aggregates announced from the LACNIC address blocks: 49451 LACNIC Region origin ASes present in the Internet Routing Table: 11295 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2669 LACNIC Region transit ASes present in the Internet Routing Table: 2523 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 36 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9264 Number of LACNIC addresses announced to Internet: 170721792 Equivalent to 10 /8s, 45 /16s and 2 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 35091 Total AfriNIC prefixes after maximum aggregation: 6858 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 48568 Unique aggregates announced from the AfriNIC address blocks: 16485 AfriNIC Region origin ASes present in the Internet Routing Table: 1969 AfriNIC Prefixes per ASN: 24.67 AfriNIC Region origin ASes announcing only one prefix: 721 AfriNIC Region transit ASes present in the Internet Routing Table: 386 Average AfriNIC Region AS path length visible: 5.1 Max AfriNIC Region AS path length visible: 37 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1331 Number of AfriNIC addresses announced to Internet: 104033792 Equivalent to 6 /8s, 51 /16s and 110 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & 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 13674 8730 116 CHINAMOBILE-CN China Mobile Communication 7545 6163 835 604 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4477 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4469 536 310 BBIL-AP BHARTI Airtel Ltd., IN 7552 3951 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3719 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3297 1868 99 VNPT-AS-VN VNPT Corp, VN 56046 3116 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2923 862 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2256 496 1435 HUTCHISON-AS-AP HGC Global Communications Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14364 40906 5414 AMAZON-02, US 11492 4746 320 804 CABLEONE, US 22773 3952 3061 316 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3676 1320 81 SHAW, CA 174 3281 8773 820 COGENT-174, US 396982 3270 4824 460 GOOGLE-CLOUD-PLATFORM, US 749 3221 54766 2472 DNIC-AS-00749, US 4155 3064 237 1699 USDA-1, US 16625 3047 1303 2216 AKAMAI-AS, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7450 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4031 3395 126 AKAMAI-ASN1, NL 9009 3923 368 2204 M247, RO 12389 3120 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2443 173 1767 CDNEXT, GB 34984 2412 363 573 TELLCOM-AS, TR 203020 1863 198 872 HOSTROYALE, IN 8452 1620 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12363 3278 573 UNINET, MX 10620 3503 474 1047 Telmex Colombia S.A., CO 13999 2542 511 346 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1368 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1231 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1178 371 23 Telefonica del Peru S.A.A., PE 22884 1063 71 370 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 2486 56 TIM SA, BR Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1846 652 28 RAYA-AS, EG 36992 1509 1498 384 ETISALAT-MISR, EG 36903 1250 554 97 MT-MPLS, MA 24863 1246 389 20 LINKdotNET-AS, EG 29571 1185 102 53 ORANGE-COTE-IVOIRE, CI 37069 1085 1096 13 MOBINIL, EG 36935 1077 522 45 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 568 82 3 KENET-AS, KE 15399 548 57 59 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14364 40906 5414 AMAZON-02, US 9808 13674 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12363 3278 573 UNINET, MX 12479 7450 1711 149 UNI2-AS, ES 7545 6163 835 604 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4746 320 804 CABLEONE, US 18403 4477 347 25 FPT-AS-AP FPT Telecom Company, VN 9498 4469 536 310 BBIL-AP BHARTI Airtel Ltd., IN 20940 4031 3395 126 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/AARNET/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13674 13558 CHINAMOBILE-CN China Mobile Communications Grou 8151 12363 11790 UNINET, MX 12479 7450 7301 UNI2-AS, ES 7545 6163 5559 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4477 4452 FPT-AS-AP FPT Telecom Company, VN 9498 4469 4159 BBIL-AP BHARTI Airtel Ltd., IN 11492 4746 3942 CABLEONE, US 7552 3951 3923 VIETEL-AS-AP Viettel Group, VN 20940 4031 3905 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/AARNET/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 53775 UNALLOCATED 8.20.88.0/24 7029 WINDSTREAM, US 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, US 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE Complete listing at https://bgp.nsrc.org/REN/AARNET/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 /10:41 /11:93 /12:301 /13:583 /14:1208 /15:2142 /16:13777 /17:8215 /18:13457 /19:24644 /20:44339 /21:52021 /22:112635 /23:103902 /24:626912 /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 6582 12363 UNINET, MX 12479 6423 7450 UNI2-AS, ES 11492 3560 4746 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3466 3676 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2514 3952 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2442 14364 AMAZON-02, US 30036 2295 2637 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2221 3503 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/AARNET/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2422 2:1562 3:943 4:10 5:4844 6:170 7:6 8:1533 9:6 11:172 12:1245 13:553 14:2632 15:401 16:303 17:388 18:907 20:573 21:4 22:188 23:7908 24:2700 25:2 27:2801 29:19 31:3352 32:31 33:1 34:81 35:267 36:4437 37:4536 38:9502 39:1091 40:293 41:4340 42:1984 43:2718 44:382 45:18892 46:5156 47:343 49:2016 50:2044 51:593 52:1605 54:362 55:1040 56:11 57:286 58:2254 59:1293 60:1188 61:2916 62:3064 63:1766 64:5638 65:2136 66:4923 67:3106 68:1087 69:3940 70:1033 71:639 72:2908 74:2832 75:1498 76:601 77:2769 78:1920 79:1758 80:2235 81:2106 82:3438 83:1469 84:1983 85:3517 86:1092 87:2135 88:1360 89:4497 90:813 91:8406 92:2785 93:2986 94:4175 95:4480 96:1494 97:312 98:953 99:764 100:71 101:1218 102:4157 103:32323 104:5361 105:784 106:880 107:2655 108:1212 109:4226 110:2242 111:3772 112:2649 113:1849 114:1992 115:2318 116:2079 117:2936 118:3056 119:1932 120:2267 121:1354 122:2822 123:2262 124:1663 125:2832 126:90 128:1605 129:966 130:1282 131:2141 132:789 133:461 134:1609 135:365 136:1495 137:1321 138:2807 139:1615 140:1641 141:1556 142:1910 143:2023 144:1271 145:626 146:2177 147:2123 148:2726 149:2911 150:1262 151:2534 152:2167 153:642 154:7474 155:2048 156:3493 157:1990 158:1415 159:2588 160:3570 161:1980 162:3935 163:2301 164:1929 165:2576 166:1557 167:2097 168:3818 169:782 170:5363 171:1010 172:4267 173:3407 174:902 175:1341 176:3809 177:4765 178:4226 179:2268 180:2618 181:4237 182:3732 183:2531 184:2070 185:21678 186:5382 187:4683 188:4275 189:4390 190:9685 191:1567 192:11414 193:9472 194:7790 195:5578 196:3280 197:3243 198:6257 199:8728 200:8227 201:6361 202:10458 203:10662 204:4587 205:3667 206:4559 207:3685 208:4283 209:5349 210:4761 211:2675 212:4767 213:3890 214:1038 215:52 216:6935 217:3338 218:1566 219:394 220:2186 221:1236 222:752 223:3012 End of report