IPv4 R&E Routing Table Report 21:10 GMT Wed 17 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: 1001747 Prefixes after maximum aggregation (per Origin AS): 388930 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 494844 Number of IPv4 prefixes with a valid ROA: 571486 Number of IPv4 prefixes with an invalid ROA: 152 Number of IPv4 prefixes with no ROA: 430109 Total ASes present in the Internet Routing Table: 77301 Prefixes per ASN: 12.96 Origin-only ASes present in the Internet Routing Table: 66202 Origin ASes announcing only one prefix: 27034 Transit ASes present in the Internet Routing Table: 11099 Transit-only ASes present in the Internet Routing Table: 555 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: 1056 Number of instances of unregistered ASNs: 1085 Number of 32-bit ASNs allocated by the RIRs: 47447 Number of 32-bit ASNs visible in the Routing Table: 38961 Prefixes from 32-bit ASNs in the Routing Table: 210322 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: 437 Number of addresses announced to Internet: 3108302848 Equivalent to 185 /8s, 68 /16s and 240 /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: 326377 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 267193 Total APNIC prefixes after maximum aggregation: 79201 APNIC Deaggregation factor: 3.37 Prefixes being announced from the APNIC address blocks: 257354 Unique aggregates announced from the APNIC address blocks: 105527 APNIC Region origin ASes present in the Internet Routing Table: 14791 APNIC Prefixes per ASN: 17.40 APNIC Region origin ASes announcing only one prefix: 4508 APNIC Region transit ASes present in the Internet Routing Table: 1971 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10343 Number of APNIC addresses announced to Internet: 750271232 Equivalent to 44 /8s, 184 /16s and 59 /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: 294479 Total ARIN prefixes after maximum aggregation: 133982 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 295890 Unique aggregates announced from the ARIN address blocks: 142790 ARIN Region origin ASes present in the Internet Routing Table: 19306 ARIN Prefixes per ASN: 15.33 ARIN Region origin ASes announcing only one prefix: 7065 ARIN Region transit ASes present in the Internet Routing Table: 1986 Average ARIN Region AS path length visible: 4.0 Max ARIN Region AS path length visible: 41 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5330 Number of ARIN addresses announced to Internet: 1350248704 Equivalent to 80 /8s, 123 /16s and 41 /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: 279232 Total RIPE prefixes after maximum aggregation: 138004 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 278573 Unique aggregates announced from the RIPE address blocks: 180128 RIPE Region origin ASes present in the Internet Routing Table: 29047 RIPE Prefixes per ASN: 9.59 RIPE Region origin ASes announcing only one prefix: 12084 RIPE Region transit ASes present in the Internet Routing Table: 4015 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: 12702 Number of RIPE addresses announced to Internet: 732532480 Equivalent to 43 /8s, 169 /16s and 143 /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: 124827 Total LACNIC prefixes after maximum aggregation: 30216 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121084 Unique aggregates announced from the LACNIC address blocks: 49493 LACNIC Region origin ASes present in the Internet Routing Table: 11291 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2661 LACNIC Region transit ASes present in the Internet Routing Table: 2537 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: 9259 Number of LACNIC addresses announced to Internet: 170663936 Equivalent to 10 /8s, 44 /16s and 32 /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: 34960 Total AfriNIC prefixes after maximum aggregation: 6832 AfriNIC Deaggregation factor: 5.12 Prefixes being announced from the AfriNIC address blocks: 48408 Unique aggregates announced from the AfriNIC address blocks: 16519 AfriNIC Region origin ASes present in the Internet Routing Table: 1965 AfriNIC Prefixes per ASN: 24.64 AfriNIC Region origin ASes announcing only one prefix: 716 AfriNIC Region transit ASes present in the Internet Routing Table: 388 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: 1327 Number of AfriNIC addresses announced to Internet: 104349696 Equivalent to 6 /8s, 56 /16s and 64 /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 13481 8729 115 CHINAMOBILE-CN China Mobile Communication 7545 6162 837 603 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4462 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 3936 1332 27 VIETEL-AS-AP Viettel Group, VN 7713 3713 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3294 1868 99 VNPT-AS-VN VNPT Corp, VN 56046 3029 811 178 CMNET-JIANGSU-AP China Mobile communicati 24560 2920 863 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 4755 2171 427 182 TATACOMM-AS TATA Communications formerly 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 14408 40915 5406 AMAZON-02, US 11492 4734 319 811 CABLEONE, US 22773 3944 3061 315 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3677 1320 81 SHAW, CA 174 3272 8764 814 COGENT-174, US 396982 3248 4039 451 GOOGLE-CLOUD-PLATFORM, US 749 3221 54766 2472 DNIC-AS-00749, US 16625 3052 1299 2213 AKAMAI-AS, US 4155 3007 234 1741 USDA-1, 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 7462 1711 149 UNI2-AS, ES 39891 4798 293 63 ALJAWWALSTC-AS, SA 20940 4031 3395 127 AKAMAI-ASN1, NL 9009 3921 367 2211 M247, RO 12389 3119 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 34984 2415 363 574 TELLCOM-AS, TR 212238 2415 172 1749 CDNEXT, GB 203020 1959 230 915 HOSTROYALE, IN 8452 1623 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 12376 3280 574 UNINET, MX 10620 3493 473 1047 Telmex Colombia S.A., CO 13999 2540 511 346 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1369 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1352 789 205 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 11664 1225 278 33 Techtel LMDS Comunicaciones Interactivas 6147 1182 371 22 Telefonica del Peru S.A.A., PE 22884 1064 71 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 2487 55 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 1821 652 28 RAYA-AS, EG 36992 1507 1498 383 ETISALAT-MISR, EG 36903 1250 554 97 MT-MPLS, MA 24863 1246 389 20 LINKdotNET-AS, EG 29571 1185 102 51 ORANGE-COTE-IVOIRE, CI 37069 1085 1096 13 MOBINIL, EG 36935 1078 523 46 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 570 82 3 KENET-AS, KE 15399 547 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 14408 40915 5406 AMAZON-02, US 9808 13481 8729 115 CHINAMOBILE-CN China Mobile Communication 8151 12376 3280 574 UNINET, MX 12479 7462 1711 149 UNI2-AS, ES 7545 6162 837 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 293 63 ALJAWWALSTC-AS, SA 11492 4734 319 811 CABLEONE, US 9498 4467 535 311 BBIL-AP BHARTI Airtel Ltd., IN 18403 4462 347 25 FPT-AS-AP FPT Telecom Company, VN 20940 4031 3395 127 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 13481 13366 CHINAMOBILE-CN China Mobile Communications Grou 8151 12376 11802 UNINET, MX 12479 7462 7313 UNI2-AS, ES 7545 6162 5559 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4798 4735 ALJAWWALSTC-AS, SA 18403 4462 4437 FPT-AS-AP FPT Telecom Company, VN 9498 4467 4156 BBIL-AP BHARTI Airtel Ltd., IN 11492 4734 3923 CABLEONE, US 7552 3936 3909 VIETEL-AS-AP Viettel Group, VN 20940 4031 3904 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 /11:92 /12:298 /13:580 /14:1209 /15:2148 /16:13766 /17:8217 /18:13456 /19:24612 /20:44262 /21:52016 /22:112476 /23:103674 /24:624869 /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 6574 12376 UNINET, MX 12479 6426 7462 UNI2-AS, ES 11492 3549 4734 CABLEONE, US 39891 3489 4798 ALJAWWALSTC-AS, SA 6327 3466 3677 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2507 3944 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2450 14408 AMAZON-02, US 30036 2295 2636 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3493 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) ---------------------------------------------- 1:2419 2:1551 3:927 4:10 5:4830 6:163 7:6 8:1543 9:6 11:172 12:1249 13:570 14:2618 15:400 16:303 17:386 18:903 20:571 21:4 22:188 23:7894 24:2706 25:2 27:2813 29:19 31:3355 32:30 33:1 34:81 35:266 36:4354 37:4547 38:9411 39:1063 40:280 41:4341 42:1969 43:2698 44:379 45:18902 46:5138 47:342 49:2011 50:2046 51:592 52:1609 54:373 55:1093 56:11 57:287 58:2242 59:1289 60:1187 61:2876 62:3043 63:1772 64:5632 65:2116 66:4898 67:3105 68:1083 69:3927 70:1031 71:638 72:2883 74:2840 75:1505 76:602 77:2783 78:1923 79:1760 80:2242 81:2091 82:3333 83:1457 84:1969 85:3492 86:1096 87:2130 88:1358 89:4495 90:808 91:8405 92:2794 93:2983 94:4154 95:4466 96:1486 97:312 98:951 99:762 100:71 101:1218 102:4114 103:32275 104:5325 105:762 106:878 107:2646 108:1221 109:4203 110:2241 111:3714 112:2602 113:1832 114:1991 115:2280 116:2072 117:2845 118:3062 119:1926 120:2225 121:1355 122:2793 123:2254 124:1671 125:2877 126:91 128:1602 129:964 130:1299 131:2141 132:789 133:461 134:1619 135:365 136:1488 137:1330 138:2812 139:1602 140:1623 141:1541 142:1915 143:2040 144:1258 145:613 146:2181 147:2116 148:2731 149:2902 150:1270 151:2528 152:2119 153:640 154:7438 155:2052 156:3454 157:1996 158:1435 159:2568 160:3567 161:1967 162:3924 163:2304 164:1911 165:2563 166:1555 167:2088 168:3817 169:783 170:5354 171:1005 172:4266 173:3405 174:902 175:1338 176:3797 177:4762 178:4148 179:2284 180:2603 181:4235 182:3686 183:2479 184:2076 185:21652 186:5401 187:4671 188:4277 189:4387 190:9679 191:1579 192:11422 193:9478 194:7794 195:5561 196:3291 197:3225 198:6244 199:8681 200:8262 201:6319 202:10429 203:10656 204:4566 205:3684 206:4550 207:3661 208:4263 209:5296 210:4741 211:2673 212:4686 213:3863 214:1043 215:52 216:6874 217:3333 218:1503 219:394 220:2144 221:1233 222:752 223:2944 End of report