IPv4 R&E Routing Table Report 21:10 GMT Sun 29 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: 1032903 Prefixes after maximum aggregation (per Origin AS): 396805 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 510859 Number of IPv4 prefixes with a valid ROA: 625949 Number of IPv4 prefixes with an invalid ROA: 96 Number of IPv4 prefixes with no ROA: 406858 Total ASes present in the Internet Routing Table: 78146 Prefixes per ASN: 13.22 Origin-only ASes present in the Internet Routing Table: 66854 Origin ASes announcing only one prefix: 27294 Transit ASes present in the Internet Routing Table: 11292 Transit-only ASes present in the Internet Routing Table: 591 Paths with bogon ASNs present in the IPv4 Routing Table: 3 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: 1038 Number of 32-bit ASNs allocated by the RIRs: 49175 Number of 32-bit ASNs visible in the Routing Table: 40229 Prefixes from 32-bit ASNs in the Routing Table: 225676 Number of bogon 32-bit ASNs visible in the Routing Table: 8 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 395 Number of addresses announced to Internet: 3100064256 Equivalent to 184 /8s, 199 /16s and 58 /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: 338074 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282230 Total APNIC prefixes after maximum aggregation: 82381 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 269220 Unique aggregates announced from the APNIC address blocks: 107249 APNIC Region origin ASes present in the Internet Routing Table: 15154 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: 2050 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: 10703 Number of APNIC addresses announced to Internet: 752835072 Equivalent to 44 /8s, 223 /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: 298846 Total ARIN prefixes after maximum aggregation: 134337 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 298240 Unique aggregates announced from the ARIN address blocks: 145894 ARIN Region origin ASes present in the Internet Routing Table: 19370 ARIN Prefixes per ASN: 15.40 ARIN Region origin ASes announcing only one prefix: 7083 ARIN Region transit ASes present in the Internet Routing Table: 1982 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: 5536 Number of ARIN addresses announced to Internet: 1341291520 Equivalent to 79 /8s, 242 /16s and 124 /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: 286745 Total RIPE prefixes after maximum aggregation: 141697 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 289030 Unique aggregates announced from the RIPE address blocks: 187879 RIPE Region origin ASes present in the Internet Routing Table: 29336 RIPE Prefixes per ASN: 9.85 RIPE Region origin ASes announcing only one prefix: 12136 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: 13219 Number of RIPE addresses announced to Internet: 732704768 Equivalent to 43 /8s, 172 /16s and 48 /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: 127107 Total LACNIC prefixes after maximum aggregation: 30730 LACNIC Deaggregation factor: 4.14 Prefixes being announced from the LACNIC address blocks: 122634 Unique aggregates announced from the LACNIC address blocks: 50140 LACNIC Region origin ASes present in the Internet Routing Table: 11367 LACNIC Prefixes per ASN: 10.79 LACNIC Region origin ASes announcing only one prefix: 2697 LACNIC Region transit ASes present in the Internet Routing Table: 2615 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: 169628672 Equivalent to 10 /8s, 28 /16s and 84 /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: 36939 Total AfriNIC prefixes after maximum aggregation: 6985 AfriNIC Deaggregation factor: 5.29 Prefixes being announced from the AfriNIC address blocks: 53383 Unique aggregates announced from the AfriNIC address blocks: 19352 AfriNIC Region origin ASes present in the Internet Routing Table: 2011 AfriNIC Prefixes per ASN: 26.55 AfriNIC Region origin ASes announcing only one prefix: 725 AfriNIC Region transit ASes present in the Internet Routing Table: 383 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: 1375 Number of AfriNIC addresses announced to Internet: 103347456 Equivalent to 6 /8s, 40 /16s and 245 /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 13777 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5938 829 508 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4876 548 317 BBIL-AP BHARTI Airtel Ltd., IN 18403 4532 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4053 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3676 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3475 886 176 CMNET-JIANGSU-AP China Mobile communicati 45899 3340 1868 97 VNPT-AS-VN VNPT Corp, VN 24560 3007 861 514 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2839 179 545 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 14544 41222 5594 AMAZON-02 - Amazon.com, Inc., US 22773 4781 3117 365 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4650 309 1024 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3719 1321 74 SHAW - Shaw Communications, CA 396982 3294 4856 487 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3176 8761 818 COGENT-174 - Cogent Communications, LLC, 749 3146 54745 2397 DNIC-AS-00749 - United States Department 16625 2810 1237 2143 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2700 221 895 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 7191 1711 149 UNI2-AS, ES 39891 4972 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 2697 195 1980 CDNEXT, GB 34984 2455 365 570 TELLCOM-AS, TR 8452 1726 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 12828 3294 607 UNINET, MX 10620 3452 457 1103 Telmex Colombia S.A., CO 13999 2460 506 344 Mega Cable, S.A. de C.V., MX 11830 1959 369 65 Instituto Costarricense de Electricidad y 11664 1459 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 1242 371 22 INTEGRATEL PERU S.A.A., PE 26615 1058 2393 95 TIM SA, BR 22884 1054 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 2025 648 34 RAYA-AS, EG 36992 1862 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 15399 550 57 61 WANANCHI-, KE 36914 545 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 14544 41222 5594 AMAZON-02 - Amazon.com, Inc., US 9808 13777 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12828 3294 607 UNINET, MX 12479 7191 1711 149 UNI2-AS, ES 7545 5938 829 508 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 306 72 ALJAWWALSTC-AS, SA 9498 4876 548 317 BBIL-AP BHARTI Airtel Ltd., IN 22773 4781 3117 365 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4650 309 1024 CABLEONE - CABLE ONE, INC., US 18403 4532 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 13777 13657 CHINAMOBILE-CN China Mobile Communications Grou 8151 12828 12221 UNINET, MX 12479 7191 7042 UNI2-AS, ES 7545 5938 5430 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 4900 ALJAWWALSTC-AS, SA 9498 4876 4559 BBIL-AP BHARTI Airtel Ltd., IN 18403 4532 4507 FPT-AS-AP FPT Telecom Company, VN 22773 4781 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 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 395476 UNALLOCATED 12.36.195.0/24 3356 LEVEL3 - Level 3 Parent 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 /12:296 /13:584 /14:1196 /15:2100 /16:13421 /17:8280 /18:13287 /19:25358 /20:45566 /21:52074 /22:113423 /23:106365 /24:650787 /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 7002 12828 UNINET, MX 12479 6133 7191 UNI2-AS, ES 39891 3656 4972 ALJAWWALSTC-AS, SA 11492 3511 4650 CABLEONE - CABLE ONE, INC., US 6327 3501 3719 SHAW - Shaw Communications, CA 22773 3052 4781 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2615 14544 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) ---------------------------------------------- 1:2481 2:1739 3:1003 4:5 5:5110 6:84 7:6 8:1501 9:38 11:172 12:1189 13:681 14:2670 15:459 16:169 17:421 18:910 20:604 21:4 22:188 23:8256 24:2852 25:2 27:2823 28:1 29:19 31:3415 32:36 34:87 35:290 36:4641 37:4456 38:9978 39:1276 40:422 41:4572 42:2200 43:3022 44:449 45:19847 46:4899 47:409 48:105 49:2213 50:2037 51:615 52:1299 54:272 55:636 56:11 57:319 58:2328 59:1378 60:1173 61:3126 62:3126 63:1754 64:6260 65:2128 66:6033 67:3255 68:1503 69:4214 70:1048 71:616 72:3147 74:3001 75:1488 76:591 77:2915 78:1934 79:1790 80:2333 81:2209 82:4043 83:1438 84:2091 85:3808 86:1094 87:2314 88:1350 89:4704 90:786 91:8424 92:2836 93:3025 94:4337 95:4645 96:1451 97:315 98:942 99:809 100:68 101:1460 102:4465 103:32441 104:5340 105:819 106:910 107:2850 108:1231 109:4222 110:2292 111:4115 112:3146 113:1969 114:2264 115:2326 116:2175 117:3498 118:2992 119:2089 120:2691 121:1554 122:2987 123:2253 124:1656 125:2983 126:125 128:1654 129:966 130:1609 131:2308 132:709 133:475 134:1617 135:607 136:1504 137:1443 138:3111 139:1541 140:1722 141:1697 142:2520 143:2025 144:1575 145:641 146:2204 147:2159 148:2728 149:3083 150:1323 151:2729 152:2313 153:1049 154:9564 155:2228 156:4455 157:2292 158:1441 159:2809 160:3797 161:1957 162:4037 163:2468 164:1907 165:2633 166:1287 167:2261 168:3991 169:893 170:5553 171:1118 172:4568 173:3477 174:885 175:1367 176:3820 177:4775 178:4369 179:2296 180:3029 181:4478 182:4022 183:2832 184:2015 185:21830 186:5763 187:4961 188:4603 189:4515 190:9803 191:1536 192:11442 193:9585 194:7847 195:5804 196:3333 197:3249 198:6215 199:6039 200:8221 201:6420 202:10719 203:10653 204:4764 205:3542 206:4505 207:3992 208:4390 209:5474 210:4772 211:2684 212:4996 213:4116 214:648 215:47 216:7296 217:3558 218:1699 219:419 220:2200 221:1310 222:930 223:3395 End of report