IPv4 R&E Routing Table Report 21:10 GMT Fri 27 Mar, 2026 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: 1037891 Prefixes after maximum aggregation (per Origin AS): 398269 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 511482 Number of IPv4 prefixes with a valid ROA: 626612 Number of IPv4 prefixes with an invalid ROA: 96 Number of IPv4 prefixes with no ROA: 411183 Total ASes present in the Internet Routing Table: 78181 Prefixes per ASN: 13.28 Origin-only ASes present in the Internet Routing Table: 66879 Origin ASes announcing only one prefix: 27310 Transit ASes present in the Internet Routing Table: 11302 Transit-only ASes present in the Internet Routing Table: 587 Paths with bogon ASNs present in the IPv4 Routing Table: 7 Average AS path length visible in the Internet Routing Table: 4.4 Max AS path length visible: 68 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 1044 Number of instances of unregistered ASNs: 1074 Number of 32-bit ASNs allocated by the RIRs: 49148 Number of 32-bit ASNs visible in the Routing Table: 40220 Prefixes from 32-bit ASNs in the Routing Table: 225686 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 396 Number of addresses announced to Internet: 3106794752 Equivalent to 185 /8s, 45 /16s and 237 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 338251 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282120 Total APNIC prefixes after maximum aggregation: 82381 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 269112 Unique aggregates announced from the APNIC address blocks: 107216 APNIC Region origin ASes present in the Internet Routing Table: 15148 APNIC Prefixes per ASN: 17.77 APNIC Region origin ASes announcing only one prefix: 4653 APNIC Region transit ASes present in the Internet Routing Table: 2052 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 52 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10697 Number of APNIC addresses announced to Internet: 752819712 Equivalent to 44 /8s, 223 /16s and 30 /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: 303640 Total ARIN prefixes after maximum aggregation: 135922 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 303038 Unique aggregates announced from the ARIN address blocks: 146558 ARIN Region origin ASes present in the Internet Routing Table: 19415 ARIN Prefixes per ASN: 15.61 ARIN Region origin ASes announcing only one prefix: 7092 ARIN Region transit ASes present in the Internet Routing Table: 1987 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: 5538 Number of ARIN addresses announced to Internet: 1347976704 Equivalent to 80 /8s, 88 /16s and 126 /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: 286707 Total RIPE prefixes after maximum aggregation: 141628 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 289029 Unique aggregates announced from the RIPE address blocks: 187820 RIPE Region origin ASes present in the Internet Routing Table: 29331 RIPE Prefixes per ASN: 9.85 RIPE Region origin ASes announcing only one prefix: 12143 RIPE Region transit ASes present in the Internet Routing Table: 4057 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: 13210 Number of RIPE addresses announced to Internet: 732455424 Equivalent to 43 /8s, 168 /16s and 98 /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: 127380 Total LACNIC prefixes after maximum aggregation: 30674 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 122924 Unique aggregates announced from the LACNIC address blocks: 50186 LACNIC Region origin ASes present in the Internet Routing Table: 11367 LACNIC Prefixes per ASN: 10.81 LACNIC Region origin ASes announcing only one prefix: 2695 LACNIC Region transit ASes present in the Internet Routing Table: 2611 Average LACNIC Region AS path length visible: 5.2 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9396 Number of LACNIC addresses announced to Internet: 169862656 Equivalent to 10 /8s, 31 /16s and 230 /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: 37000 Total AfriNIC prefixes after maximum aggregation: 6987 AfriNIC Deaggregation factor: 5.30 Prefixes being announced from the AfriNIC address blocks: 53391 Unique aggregates announced from the AfriNIC address blocks: 19356 AfriNIC Region origin ASes present in the Internet Routing Table: 2015 AfriNIC Prefixes per ASN: 26.50 AfriNIC Region origin ASes announcing only one prefix: 727 AfriNIC Region transit ASes present in the Internet Routing Table: 385 Average AfriNIC Region AS path length visible: 5.2 Max AfriNIC Region AS path length visible: 62 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1379 Number of AfriNIC addresses announced to Internet: 103423232 Equivalent to 6 /8s, 42 /16s and 29 /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 13776 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5938 829 508 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4877 548 318 BBIL-AP BHARTI Airtel Ltd., IN 18403 4542 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4053 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3675 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3475 886 176 CMNET-JIANGSU-AP China Mobile communicati 45899 3339 1868 97 VNPT-AS-VN VNPT Corp, VN 24560 3005 861 512 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2805 177 541 LCS-AS-AP LARUS Limited, HK 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 14592 41226 5614 AMAZON-02 - Amazon.com, Inc., US 22773 4782 3117 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4646 308 1024 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3720 1321 75 SHAW - Shaw Communications, CA 396982 3294 4856 487 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3176 8761 819 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 16625 2810 1237 2143 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2703 221 892 AS-COLOCROSSING - HostPapa, 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 7185 1711 149 UNI2-AS, ES 39891 4971 306 72 ALJAWWALSTC-AS, SA 20940 3947 3389 111 AKAMAI-ASN1, NL 9009 3842 356 2250 M247, RO 12389 3150 2320 871 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2696 195 1979 CDNEXT, GB 34984 2455 365 570 TELLCOM-AS, TR 8452 1713 1852 14 TE-AS TE-AS, EG 203020 1632 248 807 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 12825 3294 606 UNINET, MX 10620 3452 457 1103 Telmex Colombia S.A., CO 13999 2461 506 344 Mega Cable, S.A. de C.V., MX 11830 1959 369 65 Instituto Costarricense de Electricidad y 11664 1453 278 33 Techtel LMDS Comunicaciones Interactivas 28573 1372 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1244 371 22 INTEGRATEL PERU S.A.A., PE 26615 1058 2393 95 TIM SA, BR 22884 1056 67 356 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 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 2045 648 34 RAYA-AS, EG 36992 1854 1531 336 ETISALAT-MISR, EG 24863 1286 389 16 LINKdotNET-AS, EG 36935 1247 524 47 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1116 1100 11 MOBINIL, EG 29571 1072 78 20 ORANGE-COTE-IVOIRE, CI 20011 589 155 220 NTT-DATA-Inc, ZA 36914 555 82 3 KENET-AS, KE 15399 550 57 61 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 14592 41226 5614 AMAZON-02 - Amazon.com, Inc., US 9808 13776 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12825 3294 606 UNINET, MX 12479 7185 1711 149 UNI2-AS, ES 7545 5938 829 508 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4971 306 72 ALJAWWALSTC-AS, SA 9498 4877 548 318 BBIL-AP BHARTI Airtel Ltd., IN 22773 4782 3117 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4646 308 1024 CABLEONE - CABLE ONE, INC., US 18403 4542 347 25 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 13776 13656 CHINAMOBILE-CN China Mobile Communications Grou 8151 12825 12219 UNINET, MX 12479 7185 7036 UNI2-AS, ES 7545 5938 5430 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4971 4899 ALJAWWALSTC-AS, SA 9498 4877 4559 BBIL-AP BHARTI Airtel Ltd., IN 18403 4542 4517 FPT-AS-AP FPT Telecom Company, VN 22773 4782 4416 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4053 4024 VIETEL-AS-AP Viettel Group, VN 20940 3947 3836 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 199742 UNALLOCATED 2.27.58.0/24 58212 DATAFOREST, DE 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887 - C 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En Complete listing at https://bgp.nsrc.org/REN/AARNET/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 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, 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 23.140.216.0/24 Origin: 27176 DATAWAGON - DataWagon LLC, US 23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS - UnReal Servers, LLC, 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 /10:40 /11:95 /12:297 /13:585 /14:1196 /15:2107 /16:13601 /17:8301 /18:13314 /19:25434 /20:45765 /21:52302 /22:113796 /23:107392 /24:653635 /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 7000 12825 UNINET, MX 12479 6127 7185 UNI2-AS, ES 39891 3655 4971 ALJAWWALSTC-AS, SA 11492 3507 4646 CABLEONE - CABLE ONE, INC., US 6327 3501 3720 SHAW - Shaw Communications, CA 22773 3052 4782 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2618 14592 AMAZON-02 - Amazon.com, Inc., US 30036 2317 2666 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2232 3452 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) ---------------------------------------------- 1:2482 2:1718 3:1004 4:5 5:5113 6:196 7:6 8:1499 9:38 11:172 12:1185 13:683 14:2668 15:459 16:169 17:421 18:918 20:604 21:4 22:188 23:8258 24:2853 25:2 27:2809 28:1 29:19 31:3409 32:36 34:87 35:290 36:4642 37:4464 38:9978 39:1275 40:413 41:4574 42:2201 43:3024 44:448 45:19875 46:4897 47:408 48:99 49:2199 50:2032 51:618 52:1307 54:277 55:1119 56:11 57:320 58:2328 59:1378 60:1173 61:3126 62:3126 63:1755 64:6261 65:2129 66:6034 67:3252 68:1499 69:4214 70:1047 71:616 72:3146 74:3001 75:1488 76:588 77:2917 78:1932 79:1796 80:2333 81:2205 82:4037 83:1443 84:2091 85:3811 86:1094 87:2308 88:1350 89:4698 90:785 91:8428 92:2841 93:3024 94:4339 95:4643 96:1451 97:315 98:944 99:808 100:68 101:1459 102:4470 103:32429 104:5336 105:819 106:924 107:2847 108:1231 109:4224 110:2293 111:4111 112:3138 113:1975 114:2264 115:2325 116:2175 117:3479 118:2991 119:2073 120:2692 121:1556 122:2981 123:2260 124:1657 125:2983 126:125 128:1704 129:966 130:1621 131:2471 132:813 133:475 134:1655 135:607 136:1589 137:1548 138:3173 139:1638 140:1765 141:1702 142:2523 143:2101 144:1706 145:639 146:2203 147:2174 148:2725 149:3079 150:1348 151:2721 152:2313 153:1057 154:9532 155:2309 156:4466 157:2292 158:1507 159:2814 160:3828 161:1951 162:4039 163:2461 164:2037 165:2634 166:1286 167:2258 168:3990 169:892 170:5550 171:1116 172:4566 173:3473 174:885 175:1364 176:3827 177:4822 178:4372 179:2297 180:3027 181:4469 182:4022 183:2834 184:2015 185:21828 186:5793 187:4970 188:4604 189:4552 190:9794 191:1542 192:11493 193:9585 194:7849 195:5803 196:3337 197:3253 198:6276 199:6081 200:8231 201:6432 202:10719 203:10655 204:4780 205:3794 206:4534 207:4016 208:4388 209:5496 210:4772 211:2684 212:4995 213:4117 214:1055 215:47 216:7285 217:3556 218:1699 219:419 220:2200 221:1310 222:930 223:3394 End of report