IPv4 R&E Routing Table Report 21:10 GMT Mon 20 Apr, 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: 1041286 Prefixes after maximum aggregation (per Origin AS): 399761 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 514788 Number of IPv4 prefixes with a valid ROA: 633558 Number of IPv4 prefixes with an invalid ROA: 93 Number of IPv4 prefixes with no ROA: 407634 Total ASes present in the Internet Routing Table: 78321 Prefixes per ASN: 13.30 Origin-only ASes present in the Internet Routing Table: 67066 Origin ASes announcing only one prefix: 27402 Transit ASes present in the Internet Routing Table: 11255 Transit-only ASes present in the Internet Routing Table: 585 Paths with bogon ASNs present in the IPv4 Routing Table: 8 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: 1036 Number of instances of unregistered ASNs: 1066 Number of 32-bit ASNs allocated by the RIRs: 49402 Number of 32-bit ASNs visible in the Routing Table: 40398 Prefixes from 32-bit ASNs in the Routing Table: 227556 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 497 Number of addresses announced to Internet: 3103902720 Equivalent to 185 /8s, 1 /16s and 204 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 339310 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282586 Total APNIC prefixes after maximum aggregation: 82533 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 269554 Unique aggregates announced from the APNIC address blocks: 107760 APNIC Region origin ASes present in the Internet Routing Table: 15167 APNIC Prefixes per ASN: 17.77 APNIC Region origin ASes announcing only one prefix: 4670 APNIC Region transit ASes present in the Internet Routing Table: 2042 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 37 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10736 Number of APNIC addresses announced to Internet: 748945664 Equivalent to 44 /8s, 164 /16s and 1 /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: 304098 Total ARIN prefixes after maximum aggregation: 136037 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 303599 Unique aggregates announced from the ARIN address blocks: 147157 ARIN Region origin ASes present in the Internet Routing Table: 19430 ARIN Prefixes per ASN: 15.63 ARIN Region origin ASes announcing only one prefix: 7117 ARIN Region transit ASes present in the Internet Routing Table: 1975 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: 5560 Number of ARIN addresses announced to Internet: 1348005888 Equivalent to 80 /8s, 88 /16s and 240 /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: 288611 Total RIPE prefixes after maximum aggregation: 142723 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 291145 Unique aggregates announced from the RIPE address blocks: 189730 RIPE Region origin ASes present in the Internet Routing Table: 29413 RIPE Prefixes per ASN: 9.90 RIPE Region origin ASes announcing only one prefix: 12183 RIPE Region transit ASes present in the Internet Routing Table: 4053 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: 13301 Number of RIPE addresses announced to Internet: 733520128 Equivalent to 43 /8s, 184 /16s and 161 /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: 127826 Total LACNIC prefixes after maximum aggregation: 30792 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 122657 Unique aggregates announced from the LACNIC address blocks: 50342 LACNIC Region origin ASes present in the Internet Routing Table: 11359 LACNIC Prefixes per ASN: 10.80 LACNIC Region origin ASes announcing only one prefix: 2694 LACNIC Region transit ASes present in the Internet Routing Table: 2606 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: 9414 Number of LACNIC addresses announced to Internet: 169773824 Equivalent to 10 /8s, 30 /16s and 139 /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: 37129 Total AfriNIC prefixes after maximum aggregation: 7061 AfriNIC Deaggregation factor: 5.26 Prefixes being announced from the AfriNIC address blocks: 53833 Unique aggregates announced from the AfriNIC address blocks: 19415 AfriNIC Region origin ASes present in the Internet Routing Table: 2023 AfriNIC Prefixes per ASN: 26.61 AfriNIC Region origin ASes announcing only one prefix: 738 AfriNIC Region transit ASes present in the Internet Routing Table: 391 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: 1387 Number of AfriNIC addresses announced to Internet: 103374336 Equivalent to 6 /8s, 41 /16s and 94 /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 13842 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5906 827 490 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4923 551 332 BBIL-AP BHARTI Airtel Ltd., IN 18403 4564 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4056 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3683 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3486 886 176 CMNET-JIANGSU-AP China Mobile communicati 45899 3354 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2982 844 562 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2902 183 495 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 14783 41293 5663 AMAZON-02 - Amazon.com, Inc., US 22773 4774 3116 363 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4669 310 1040 CABLEONE - CABLE ONE, INC., US 7155 3870 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3723 1305 76 SHAW - Shaw Communications, CA 396982 3323 4859 498 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3308 8764 817 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 36352 2718 222 908 AS-COLOCROSSING - HostPapa, US 30036 2662 365 351 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom C 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 7174 1711 149 UNI2-AS, ES 39891 4943 305 72 ALJAWWALSTC-AS, SA 20940 3946 3389 111 AKAMAI-ASN1, NL 9009 3829 354 2253 M247, RO 12389 3148 2320 873 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2747 200 2026 CDNEXT, GB 34984 2451 365 575 TELLCOM-AS, TR 8452 1727 1852 14 TE-AS TE-AS, EG 203020 1667 252 832 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 12824 3309 617 UNINET, MX 10620 3430 450 1106 Telmex Colombia S.A., CO 13999 2434 506 346 Mega Cable, S.A. de C.V., MX 11830 1937 369 65 Instituto Costarricense de Electricidad y 11664 1437 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1373 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1246 371 22 INTEGRATEL PERU S.A.A., PE 26615 1068 2392 100 TIM SA, BR 22884 1063 71 361 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 2024 648 34 RAYA-AS, EG 36992 1859 1533 336 ETISALAT-MISR, EG 24863 1279 389 16 LINKdotNET-AS, EG 36935 1241 522 44 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1116 1100 11 MOBINIL, EG 29571 1071 78 19 ORANGE-COTE-IVOIRE, CI 20011 643 173 262 NTT-DATA-Inc, ZA 3741 557 724 324 NTT-DATA-Inc, ZA 36914 556 82 3 KENET-AS, 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 14783 41293 5663 AMAZON-02 - Amazon.com, Inc., US 9808 13842 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12824 3309 617 UNINET, MX 12479 7174 1711 149 UNI2-AS, ES 7545 5906 827 490 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 305 72 ALJAWWALSTC-AS, SA 9498 4923 551 332 BBIL-AP BHARTI Airtel Ltd., IN 22773 4774 3116 363 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4669 310 1040 CABLEONE - CABLE ONE, INC., US 18403 4564 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 13842 13721 CHINAMOBILE-CN China Mobile Communications Grou 8151 12824 12207 UNINET, MX 12479 7174 7025 UNI2-AS, ES 7545 5906 5416 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 4871 ALJAWWALSTC-AS, SA 9498 4923 4591 BBIL-AP BHARTI Airtel Ltd., IN 18403 4564 4539 FPT-AS-AP FPT Telecom Company, VN 22773 4774 4411 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4056 4028 VIETEL-AS-AP Viettel Group, VN 20940 3946 3835 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 - C 395729 UNALLOCATED 8.28.58.0/24 32787 PROLEXIC-TECHNOLOGIES-D 395729 UNALLOCATED 8.28.60.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 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 /10:39 /11:95 /12:297 /13:585 /14:1192 /15:2113 /16:13607 /17:8307 /18:13346 /19:25487 /20:45789 /21:52384 /22:113602 /23:107464 /24:656948 /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 7014 12824 UNINET, MX 12479 6115 7174 UNI2-AS, ES 39891 3628 4943 ALJAWWALSTC-AS, SA 11492 3531 4669 CABLEONE - CABLE ONE, INC., US 6327 3505 3723 SHAW - Shaw Communications, CA 22773 3053 4774 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2824 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2645 14783 AMAZON-02 - Amazon.com, Inc., US 30036 2314 2662 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2234 3430 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) ---------------------------------------------- 1:2489 2:1902 3:1011 4:5 5:5115 6:198 7:6 8:1487 9:39 11:172 12:1183 13:702 14:2689 15:459 16:199 17:424 18:923 20:602 21:4 22:188 23:8223 24:2774 25:2 27:2831 28:1 29:19 31:3459 32:36 34:87 35:283 36:4684 37:4433 38:10160 39:1285 40:417 41:4556 42:2182 43:3073 44:448 45:19710 46:4889 47:411 48:125 49:2231 50:2015 51:658 52:1320 54:290 55:1112 56:11 57:322 58:2324 59:1377 60:1174 61:3129 62:3125 63:1720 64:6324 65:2131 66:6087 67:3259 68:1501 69:4204 70:1051 71:621 72:3201 74:3033 75:1501 76:588 77:2934 78:1981 79:1789 80:2348 81:2235 82:4108 83:1447 84:2141 85:3824 86:1091 87:2369 88:1339 89:4743 90:801 91:8435 92:2818 93:3020 94:4362 95:4680 96:1456 97:315 98:940 99:818 100:70 101:1469 102:4513 103:32438 104:5354 105:862 106:912 107:2886 108:1253 109:4254 110:2266 111:4113 112:3165 113:1966 114:2276 115:2330 116:2162 117:3513 118:2999 119:2090 120:2704 121:1554 122:2992 123:2287 124:1651 125:2979 126:126 128:1621 129:968 130:1649 131:2474 132:848 133:486 134:1676 135:613 136:1595 137:1545 138:3323 139:1623 140:1754 141:1725 142:2538 143:2104 144:1765 145:643 146:2212 147:2235 148:2783 149:3146 150:1373 151:2825 152:2330 153:1421 154:9842 155:2308 156:4540 157:2310 158:1554 159:2862 160:3828 161:1959 162:4039 163:2503 164:2039 165:2649 166:1276 167:2308 168:4025 169:859 170:5559 171:1129 172:4714 173:3474 174:882 175:1357 176:3874 177:4824 178:4356 179:2304 180:3064 181:4550 182:4025 183:2838 184:2031 185:21861 186:5763 187:4956 188:4538 189:4518 190:9830 191:1551 192:11476 193:9645 194:7888 195:5820 196:3397 197:3272 198:6278 199:6056 200:8230 201:6383 202:10724 203:10656 204:4792 205:3744 206:4564 207:3996 208:4392 209:5463 210:4767 211:2682 212:5101 213:4137 214:1045 215:47 216:7293 217:3583 218:1701 219:413 220:2197 221:1311 222:931 223:3418 End of report