IPv4 R&E Routing Table Report 21:10 GMT Wed 29 Oct, 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: 1013230 Prefixes after maximum aggregation (per Origin AS): 393021 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 499454 Number of IPv4 prefixes with a valid ROA: 583969 Number of IPv4 prefixes with an invalid ROA: 130 Number of IPv4 prefixes with no ROA: 429131 Total ASes present in the Internet Routing Table: 77446 Prefixes per ASN: 13.08 Origin-only ASes present in the Internet Routing Table: 66306 Origin ASes announcing only one prefix: 27101 Transit ASes present in the Internet Routing Table: 11140 Transit-only ASes present in the Internet Routing Table: 554 Paths with bogon ASNs present in the IPv4 Routing Table: 6 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 52 Max AS path prepend of ASN (152048) 40 Prefixes from unregistered ASNs in the Routing Table: 991 Number of instances of unregistered ASNs: 1021 Number of 32-bit ASNs allocated by the RIRs: 47827 Number of 32-bit ASNs visible in the Routing Table: 39187 Prefixes from 32-bit ASNs in the Routing Table: 214230 Number of bogon 32-bit ASNs visible in the Routing Table: 70 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 449 Number of addresses announced to Internet: 3113245440 Equivalent to 185 /8s, 144 /16s and 91 /24s Percentage of available address space announced: 84.1 Percentage of allocated address space announced: 84.1 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: 331210 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270265 Total APNIC prefixes after maximum aggregation: 80524 APNIC Deaggregation factor: 3.36 Prefixes being announced from the APNIC address blocks: 260005 Unique aggregates announced from the APNIC address blocks: 106050 APNIC Region origin ASes present in the Internet Routing Table: 14843 APNIC Prefixes per ASN: 17.52 APNIC Region origin ASes announcing only one prefix: 4524 APNIC Region transit ASes present in the Internet Routing Table: 1997 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 42 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10405 Number of APNIC addresses announced to Internet: 751619072 Equivalent to 44 /8s, 204 /16s and 204 /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: 300628 Total ARIN prefixes after maximum aggregation: 135286 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 301070 Unique aggregates announced from the ARIN address blocks: 144882 ARIN Region origin ASes present in the Internet Routing Table: 19386 ARIN Prefixes per ASN: 15.53 ARIN Region origin ASes announcing only one prefix: 7121 ARIN Region transit ASes present in the Internet Routing Table: 1989 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5401 Number of ARIN addresses announced to Internet: 1353359872 Equivalent to 80 /8s, 170 /16s and 162 /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: 281181 Total RIPE prefixes after maximum aggregation: 139314 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 281404 Unique aggregates announced from the RIPE address blocks: 181930 RIPE Region origin ASes present in the Internet Routing Table: 29095 RIPE Prefixes per ASN: 9.67 RIPE Region origin ASes announcing only one prefix: 12087 RIPE Region transit ASes present in the Internet Routing Table: 4029 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 29 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12796 Number of RIPE addresses announced to Internet: 733852672 Equivalent to 43 /8s, 189 /16s and 180 /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: 125197 Total LACNIC prefixes after maximum aggregation: 30410 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121301 Unique aggregates announced from the LACNIC address blocks: 49504 LACNIC Region origin ASes present in the Internet Routing Table: 11306 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2671 LACNIC Region transit ASes present in the Internet Routing Table: 2561 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9282 Number of LACNIC addresses announced to Internet: 170704640 Equivalent to 10 /8s, 44 /16s and 191 /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: 34968 Total AfriNIC prefixes after maximum aggregation: 6822 AfriNIC Deaggregation factor: 5.13 Prefixes being announced from the AfriNIC address blocks: 49000 Unique aggregates announced from the AfriNIC address blocks: 16703 AfriNIC Region origin ASes present in the Internet Routing Table: 1937 AfriNIC Prefixes per ASN: 25.30 AfriNIC Region origin ASes announcing only one prefix: 698 AfriNIC Region transit ASes present in the Internet Routing Table: 376 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 42 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1303 Number of AfriNIC addresses announced to Internet: 103447296 Equivalent to 6 /8s, 42 /16s and 123 /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 13345 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6134 834 592 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4493 537 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4381 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3985 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3715 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3303 1868 98 VNPT-AS-VN VNPT Corp, VN 56046 3244 827 180 CMNET-JIANGSU-AP China Mobile communicati 24560 2932 863 516 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2486 273 1916 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14405 41101 5368 AMAZON-02, US 11492 4772 316 800 CABLEONE, US 22773 4636 3107 404 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3860 286 85 VIASAT-SP-BACKBONE, US 6327 3685 1320 82 SHAW, CA 396982 3279 4826 470 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 4155 3138 243 1757 USDA-1, US 16625 2995 1281 2186 AKAMAI-AS, US 36352 2849 231 914 AS-COLOCROSSING, 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 7310 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 20940 4013 3395 124 AKAMAI-ASN1, NL 9009 4010 377 2283 M247, RO 12389 3095 2307 828 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2502 176 1810 CDNEXT, GB 34984 2416 363 577 TELLCOM-AS, TR 203020 1713 206 1003 HOSTROYALE, IN 8452 1673 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 12469 3298 573 UNINET, MX 10620 3456 463 1099 Telmex Colombia S.A., CO 13999 2510 511 350 Mega Cable, S.A. de C.V., MX 11830 1990 369 64 Instituto Costarricense de Electricidad y 28573 1374 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1293 278 31 Techtel LMDS Comunicaciones Interactivas 6147 1268 371 23 Telefonica del Peru S.A.A., PE 22884 1061 70 365 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1026 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 1964 630 32 RAYA-AS, EG 36992 1678 1509 399 ETISALAT-MISR, EG 24863 1262 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 29571 1189 102 52 ORANGE-COTE-IVOIRE, CI 37069 1085 1096 13 MOBINIL, EG 36935 1081 523 47 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 568 82 3 KENET-AS, KE 3741 522 725 319 NTT-DATA-Inc, ZA 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 14405 41101 5368 AMAZON-02, US 9808 13345 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12469 3298 573 UNINET, MX 12479 7310 1711 149 UNI2-AS, ES 7545 6134 834 592 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4772 316 800 CABLEONE, US 22773 4636 3107 404 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4493 537 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4381 347 24 FPT-AS-AP FPT Telecom Company, VN 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 13345 13228 CHINAMOBILE-CN China Mobile Communications Grou 8151 12469 11896 UNINET, MX 12479 7310 7161 UNI2-AS, ES 7545 6134 5542 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4381 4357 FPT-AS-AP FPT Telecom Company, VN 22773 4636 4232 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4493 4182 BBIL-AP BHARTI Airtel Ltd., IN 11492 4772 3972 CABLEONE, US 7552 3985 3957 VIETEL-AS-AP Viettel Group, VN 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 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 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 397015 UNALLOCATED 8.44.246.0/24 12025 IMDC-AS12025, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, 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 /12:300 /13:583 /14:1202 /15:2129 /16:13804 /17:8217 /18:13516 /19:24712 /20:44390 /21:52107 /22:112913 /23:104873 /24:634319 /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 6670 12469 UNINET, MX 12479 6269 7310 UNI2-AS, ES 11492 3585 4772 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3474 3685 SHAW, CA 22773 2987 4636 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2819 3860 VIASAT-SP-BACKBONE, US 16509 2425 14405 AMAZON-02, US 30036 2303 2645 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3456 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) ---------------------------------------------- 1:2433 2:1560 3:964 4:10 5:4892 6:171 7:6 8:1505 9:4 11:172 12:1238 13:549 14:2660 15:402 16:303 17:384 18:906 20:580 21:4 22:188 23:8091 24:2609 25:2 27:2816 29:19 31:3355 32:31 33:1 34:81 35:274 36:4502 37:4549 38:9359 39:1097 40:469 41:4109 42:1931 43:2781 44:401 45:19157 46:5201 47:369 49:2135 50:2053 51:596 52:1629 54:359 55:1106 56:11 57:290 58:2291 59:1305 60:1196 61:2930 62:3101 63:1765 64:5863 65:2128 66:5893 67:3242 68:1485 69:4146 70:1034 71:636 72:2984 74:2876 75:1507 76:602 77:2762 78:1922 79:1785 80:2257 81:2124 82:3555 83:1469 84:1990 85:3583 86:1101 87:2150 88:1363 89:4519 90:811 91:8405 92:2810 93:2996 94:4157 95:4561 96:1490 97:312 98:948 99:754 100:71 101:1119 102:4163 103:32233 104:5458 105:785 106:898 107:2793 108:1205 109:4211 110:2248 111:3835 112:2734 113:1875 114:2084 115:2286 116:2095 117:3055 118:3051 119:1999 120:2346 121:1501 122:2813 123:2256 124:1660 125:2885 126:124 128:1606 129:966 130:1440 131:2205 132:795 133:461 134:1626 135:365 136:1493 137:1333 138:2831 139:1591 140:1662 141:1565 142:2194 143:2102 144:1313 145:627 146:2191 147:2136 148:2755 149:2818 150:1282 151:2645 152:2269 153:648 154:8130 155:2206 156:3208 157:2005 158:1432 159:2608 160:3651 161:2007 162:3981 163:2317 164:1949 165:2553 166:1513 167:2124 168:3795 169:765 170:5416 171:1061 172:4500 173:3428 174:906 175:1342 176:3756 177:4747 178:4311 179:2289 180:2749 181:4296 182:3773 183:2567 184:2069 185:21683 186:5404 187:4701 188:4384 189:4449 190:9706 191:1571 192:11434 193:9497 194:7835 195:5580 196:3191 197:3239 198:6271 199:8846 200:8220 201:6376 202:10493 203:10644 204:4634 205:3692 206:4412 207:3868 208:4268 209:5419 210:4752 211:2670 212:4886 213:3969 214:1037 215:53 216:7156 217:3401 218:1579 219:398 220:2196 221:1263 222:756 223:3108 End of report