IPv4 R&E Routing Table Report 21:10 GMT Thu 04 Dec, 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: 1018497 Prefixes after maximum aggregation (per Origin AS): 393381 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504425 Number of IPv4 prefixes with a valid ROA: 598087 Number of IPv4 prefixes with an invalid ROA: 122 Number of IPv4 prefixes with no ROA: 420268 Total ASes present in the Internet Routing Table: 77560 Prefixes per ASN: 13.13 Origin-only ASes present in the Internet Routing Table: 66388 Origin ASes announcing only one prefix: 27097 Transit ASes present in the Internet Routing Table: 11172 Transit-only ASes present in the Internet Routing Table: 563 Paths with bogon ASNs present in the IPv4 Routing Table: 18 Average AS path length visible in the Internet Routing Table: 4.3 Max AS path length visible: 68 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 940 Number of instances of unregistered ASNs: 981 Number of 32-bit ASNs allocated by the RIRs: 48129 Number of 32-bit ASNs visible in the Routing Table: 39392 Prefixes from 32-bit ASNs in the Routing Table: 217270 Number of bogon 32-bit ASNs visible in the Routing Table: 94 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 440 Number of addresses announced to Internet: 3100549376 Equivalent to 184 /8s, 206 /16s and 161 /24s Percentage of available address space announced: 83.7 Percentage of allocated address space announced: 83.7 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: 333196 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274650 Total APNIC prefixes after maximum aggregation: 80762 APNIC Deaggregation factor: 3.40 Prefixes being announced from the APNIC address blocks: 262151 Unique aggregates announced from the APNIC address blocks: 106242 APNIC Region origin ASes present in the Internet Routing Table: 14891 APNIC Prefixes per ASN: 17.60 APNIC Region origin ASes announcing only one prefix: 4535 APNIC Region transit ASes present in the Internet Routing Table: 1998 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: 10455 Number of APNIC addresses announced to Internet: 752769536 Equivalent to 44 /8s, 222 /16s and 90 /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: 299344 Total ARIN prefixes after maximum aggregation: 134658 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299042 Unique aggregates announced from the ARIN address blocks: 145762 ARIN Region origin ASes present in the Internet Routing Table: 19386 ARIN Prefixes per ASN: 15.43 ARIN Region origin ASes announcing only one prefix: 7106 ARIN Region transit ASes present in the Internet Routing Table: 1988 Average ARIN Region AS path length visible: 3.9 Max ARIN Region AS path length visible: 35 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5428 Number of ARIN addresses announced to Internet: 1337516544 Equivalent to 79 /8s, 184 /16s and 226 /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: 282329 Total RIPE prefixes after maximum aggregation: 139890 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 283406 Unique aggregates announced from the RIPE address blocks: 183975 RIPE Region origin ASes present in the Internet Routing Table: 29099 RIPE Prefixes per ASN: 9.74 RIPE Region origin ASes announcing only one prefix: 12051 RIPE Region transit ASes present in the Internet Routing Table: 4049 Average RIPE Region AS path length visible: 4.4 Max RIPE Region AS path length visible: 45 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12845 Number of RIPE addresses announced to Internet: 736079104 Equivalent to 43 /8s, 223 /16s and 173 /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: 125699 Total LACNIC prefixes after maximum aggregation: 30535 LACNIC Deaggregation factor: 4.12 Prefixes being announced from the LACNIC address blocks: 121665 Unique aggregates announced from the LACNIC address blocks: 49687 LACNIC Region origin ASes present in the Internet Routing Table: 11314 LACNIC Prefixes per ASN: 10.75 LACNIC Region origin ASes announcing only one prefix: 2669 LACNIC Region transit ASes present in the Internet Routing Table: 2557 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9307 Number of LACNIC addresses announced to Internet: 170694656 Equivalent to 10 /8s, 44 /16s and 152 /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: 35535 Total AfriNIC prefixes after maximum aggregation: 6897 AfriNIC Deaggregation factor: 5.15 Prefixes being announced from the AfriNIC address blocks: 51792 Unique aggregates announced from the AfriNIC address blocks: 18377 AfriNIC Region origin ASes present in the Internet Routing Table: 1998 AfriNIC Prefixes per ASN: 25.92 AfriNIC Region origin ASes announcing only one prefix: 736 AfriNIC Region transit ASes present in the Internet Routing Table: 387 Average AfriNIC Region AS path length visible: 5.0 Max AfriNIC Region AS path length visible: 64 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1357 Number of AfriNIC addresses announced to Internet: 103259136 Equivalent to 6 /8s, 39 /16s and 156 /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 13287 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6047 835 593 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4590 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4414 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4012 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3709 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3337 827 181 CMNET-JIANGSU-AP China Mobile communicati 45899 3315 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2946 865 498 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2515 275 1936 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 14274 37209 5403 AMAZON-02, US 22773 4778 3115 372 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3690 1320 83 SHAW, CA 396982 3312 4861 486 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 3002 1289 2189 AKAMAI-AS, US 36352 2818 231 916 AS-COLOCROSSING, US 30036 2660 367 321 MEDIACOM-ENTERPRISE-BUSINESS, 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 7284 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3982 374 2277 M247, RO 20940 3982 3395 126 AKAMAI-ASN1, NL 12389 3152 2317 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2537 180 1835 CDNEXT, GB 34984 2424 363 576 TELLCOM-AS, TR 8452 1662 1852 14 TE-AS TE-AS, EG 203020 1614 241 782 HOSTROYALE, IN 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 12664 3296 574 UNINET, MX 10620 3423 459 1144 Telmex Colombia S.A., CO 13999 2507 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1372 2432 263 Claro NXT Telecomunicacoes Ltda, BR 11664 1353 278 33 Techtel LMDS Comunicaciones Interactivas 3816 1345 778 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1265 371 22 Telefonica del Peru S.A.A., PE 22884 1057 70 364 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1009 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 1924 368 14 RAYA-AS, EG 36992 1681 1509 399 ETISALAT-MISR, EG 24863 1260 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1085 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1054 521 33 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 568 82 3 KENET-AS, KE 15399 545 57 58 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 14274 37209 5403 AMAZON-02, US 9808 13287 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12664 3296 574 UNINET, MX 12479 7284 1711 149 UNI2-AS, ES 7545 6047 835 593 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4778 3115 372 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4590 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4414 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 13287 13167 CHINAMOBILE-CN China Mobile Communications Grou 8151 12664 12090 UNINET, MX 12479 7284 7135 UNI2-AS, ES 7545 6047 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4778 4406 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4414 4390 FPT-AS-AP FPT Telecom Company, VN 9498 4590 4254 BBIL-AP BHARTI Airtel Ltd., IN 7552 4012 3984 VIETEL-AS-AP Viettel Group, VN 20940 3982 3856 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 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 13342 UNALLOCATED 12.17.5.0/24 7018 ATT-INTERNET4, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, 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 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 3257 GTT-BACKBONE GTT, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 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 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 /11:94 /12:298 /13:582 /14:1203 /15:2095 /16:13678 /17:8230 /18:13490 /19:24802 /20:44610 /21:52096 /22:113049 /23:105361 /24:638837 /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 6851 12664 UNINET, MX 12479 6214 7284 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3690 SHAW, CA 22773 3053 4778 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2429 14274 AMAZON-02, US 30036 2317 2660 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2187 3423 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) ---------------------------------------------- 1:2443 2:1567 3:976 4:10 5:4912 6:186 7:6 8:1498 9:6 11:172 12:1230 13:571 14:2602 15:414 16:303 17:388 18:913 20:586 21:4 22:188 23:8130 24:2610 25:2 27:2812 29:19 31:3386 32:31 33:1 34:81 35:285 36:4596 37:4545 38:9369 39:1193 40:446 41:4445 42:1951 43:2840 44:399 45:19473 46:5105 47:386 49:2152 50:2057 51:597 52:1567 54:289 55:1105 56:11 57:304 58:2293 59:1319 60:1166 61:3054 62:3097 63:1743 64:5969 65:2128 66:5908 67:3242 68:1496 69:4203 70:1024 71:627 72:3041 74:2937 75:1520 76:600 77:2766 78:1918 79:1783 80:2301 81:2097 82:3833 83:1458 84:2030 85:3640 86:1106 87:2172 88:1341 89:4557 90:840 91:8444 92:2839 93:3017 94:4224 95:4566 96:1466 97:312 98:953 99:773 100:68 101:1205 102:4331 103:32210 104:5521 105:797 106:912 107:2806 108:1200 109:4243 110:2304 111:3915 112:2790 113:1921 114:2096 115:2305 116:2146 117:3134 118:3049 119:2059 120:2380 121:1513 122:2942 123:2302 124:1602 125:2903 126:125 128:1614 129:963 130:1514 131:2265 132:769 133:462 134:1624 135:489 136:1501 137:1340 138:2903 139:1599 140:1722 141:1549 142:2348 143:2141 144:1352 145:628 146:2189 147:2150 148:2788 149:2890 150:1306 151:2621 152:2281 153:835 154:9164 155:2259 156:4252 157:2231 158:1472 159:2690 160:3745 161:1994 162:4007 163:2327 164:1962 165:2613 166:1305 167:2150 168:3881 169:803 170:5462 171:1117 172:4514 173:3416 174:911 175:1341 176:3772 177:4738 178:4302 179:2284 180:2837 181:4319 182:3842 183:2619 184:2070 185:21716 186:5500 187:4781 188:4431 189:4504 190:9698 191:1561 192:11443 193:9504 194:7857 195:5615 196:3283 197:3202 198:6232 199:6093 200:8201 201:6391 202:10458 203:10594 204:4650 205:3735 206:4400 207:3924 208:4281 209:5454 210:4774 211:2678 212:4889 213:4015 214:1031 215:50 216:7081 217:3390 218:1591 219:404 220:2192 221:1288 222:776 223:3184 End of report