IPv4 R&E Routing Table Report 21:10 GMT Sun 19 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: 1041245 Prefixes after maximum aggregation (per Origin AS): 399713 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 514819 Number of IPv4 prefixes with a valid ROA: 633258 Number of IPv4 prefixes with an invalid ROA: 95 Number of IPv4 prefixes with no ROA: 407892 Total ASes present in the Internet Routing Table: 78335 Prefixes per ASN: 13.29 Origin-only ASes present in the Internet Routing Table: 67083 Origin ASes announcing only one prefix: 27408 Transit ASes present in the Internet Routing Table: 11252 Transit-only ASes present in the Internet Routing Table: 587 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: 1034 Number of instances of unregistered ASNs: 1064 Number of 32-bit ASNs allocated by the RIRs: 49402 Number of 32-bit ASNs visible in the Routing Table: 40409 Prefixes from 32-bit ASNs in the Routing Table: 227633 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: 495 Number of addresses announced to Internet: 3103789568 Equivalent to 185 /8s, 0 /16s and 18 /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: 339430 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282592 Total APNIC prefixes after maximum aggregation: 82492 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 269478 Unique aggregates announced from the APNIC address blocks: 107804 APNIC Region origin ASes present in the Internet Routing Table: 15170 APNIC Prefixes per ASN: 17.76 APNIC Region origin ASes announcing only one prefix: 4675 APNIC Region transit ASes present in the Internet Routing Table: 2048 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: 10739 Number of APNIC addresses announced to Internet: 748958976 Equivalent to 44 /8s, 164 /16s and 53 /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: 303959 Total ARIN prefixes after maximum aggregation: 135975 ARIN Deaggregation factor: 2.24 Prefixes being announced from the ARIN address blocks: 303547 Unique aggregates announced from the ARIN address blocks: 147163 ARIN Region origin ASes present in the Internet Routing Table: 19431 ARIN Prefixes per ASN: 15.62 ARIN Region origin ASes announcing only one prefix: 7113 ARIN Region transit ASes present in the Internet Routing Table: 1978 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: 5557 Number of ARIN addresses announced to Internet: 1348021760 Equivalent to 80 /8s, 89 /16s and 46 /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: 288709 Total RIPE prefixes after maximum aggregation: 142779 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 291234 Unique aggregates announced from the RIPE address blocks: 189720 RIPE Region origin ASes present in the Internet Routing Table: 29414 RIPE Prefixes per ASN: 9.90 RIPE Region origin ASes announcing only one prefix: 12181 RIPE Region transit ASes present in the Internet Routing Table: 4051 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: 13306 Number of RIPE addresses announced to Internet: 733434112 Equivalent to 43 /8s, 183 /16s and 81 /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: 127843 Total LACNIC prefixes after maximum aggregation: 30793 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 122698 Unique aggregates announced from the LACNIC address blocks: 50336 LACNIC Region origin ASes present in the Internet Routing Table: 11366 LACNIC Prefixes per ASN: 10.80 LACNIC Region origin ASes announcing only one prefix: 2700 LACNIC Region transit ASes present in the Internet Routing Table: 2599 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: 9419 Number of LACNIC addresses announced to Internet: 169789184 Equivalent to 10 /8s, 30 /16s and 199 /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: 37108 Total AfriNIC prefixes after maximum aggregation: 7059 AfriNIC Deaggregation factor: 5.26 Prefixes being announced from the AfriNIC address blocks: 53792 Unique aggregates announced from the AfriNIC address blocks: 19414 AfriNIC Region origin ASes present in the Internet Routing Table: 2024 AfriNIC Prefixes per ASN: 26.58 AfriNIC Region origin ASes announcing only one prefix: 739 AfriNIC Region transit ASes present in the Internet Routing Table: 386 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: 1388 Number of AfriNIC addresses announced to Internet: 103368448 Equivalent to 6 /8s, 41 /16s and 71 /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 13836 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5906 827 490 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4922 551 331 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 3679 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3486 886 176 CMNET-JIANGSU-AP China Mobile communicati 45899 3353 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2991 847 549 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2895 182 494 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 14735 41292 5673 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 3722 1305 75 SHAW - Shaw Communications, CA 396982 3323 4859 498 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3305 8763 815 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 36352 2745 224 925 AS-COLOCROSSING - HostPapa, US 30036 2677 367 304 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 7175 1711 149 UNI2-AS, ES 39891 4943 305 72 ALJAWWALSTC-AS, SA 20940 3961 3389 111 AKAMAI-ASN1, NL 9009 3825 353 2249 M247, RO 12389 3148 2320 873 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2745 199 2025 CDNEXT, GB 34984 2451 365 575 TELLCOM-AS, TR 8452 1699 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 12837 3309 619 UNINET, MX 10620 3429 450 1105 Telmex Colombia S.A., CO 13999 2436 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 1071 2392 100 TIM SA, BR 22884 1062 71 362 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 1282 389 16 LINKdotNET-AS, EG 36935 1241 522 44 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1112 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 549 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 14735 41292 5673 AMAZON-02 - Amazon.com, Inc., US 9808 13836 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12837 3309 619 UNINET, MX 12479 7175 1711 149 UNI2-AS, ES 7545 5906 827 490 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 305 72 ALJAWWALSTC-AS, SA 9498 4922 551 331 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 13836 13715 CHINAMOBILE-CN China Mobile Communications Grou 8151 12837 12218 UNINET, MX 12479 7175 7026 UNI2-AS, ES 7545 5906 5416 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4943 4871 ALJAWWALSTC-AS, SA 9498 4922 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 3961 3850 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 /16:13601 /17:8303 /18:13345 /19:25479 /20:45775 /21:52400 /22:113564 /23:107450 /24:656976 /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 7025 12837 UNINET, MX 12479 6116 7175 UNI2-AS, ES 39891 3628 4943 ALJAWWALSTC-AS, SA 11492 3531 4669 CABLEONE - CABLE ONE, INC., US 6327 3505 3722 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 2648 14735 AMAZON-02 - Amazon.com, Inc., US 30036 2329 2677 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2233 3429 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) ---------------------------------------------- 1:2490 2:1893 3:1009 4:5 5:5116 6:198 7:6 8:1487 9:39 11:172 12:1188 13:693 14:2687 15:459 16:199 17:424 18:915 20:602 21:4 22:188 23:8234 24:2777 25:2 27:2833 28:1 29:19 31:3468 32:36 34:87 35:283 36:4684 37:4443 38:10181 39:1285 40:417 41:4547 42:2181 43:3056 44:448 45:19700 46:4896 47:411 48:125 49:2231 50:2019 51:661 52:1313 54:285 55:1111 56:11 57:324 58:2342 59:1377 60:1174 61:3128 62:3127 63:1723 64:6326 65:2129 66:6088 67:3261 68:1500 69:4209 70:1051 71:621 72:3204 74:3032 75:1501 76:588 77:2941 78:1980 79:1792 80:2346 81:2235 82:4117 83:1447 84:2145 85:3827 86:1091 87:2377 88:1341 89:4747 90:801 91:8441 92:2820 93:3017 94:4351 95:4682 96:1458 97:314 98:942 99:813 100:70 101:1472 102:4520 103:32453 104:5356 105:861 106:912 107:2887 108:1251 109:4258 110:2279 111:4112 112:3162 113:1965 114:2276 115:2319 116:2162 117:3506 118:2955 119:2089 120:2706 121:1555 122:2994 123:2287 124:1651 125:2979 126:126 128:1621 129:976 130:1649 131:2474 132:847 133:472 134:1676 135:613 136:1596 137:1546 138:3321 139:1640 140:1753 141:1728 142:2539 143:2110 144:1765 145:646 146:2212 147:2235 148:2780 149:3135 150:1368 151:2839 152:2327 153:1419 154:9852 155:2298 156:4546 157:2311 158:1549 159:2859 160:3814 161:1956 162:4043 163:2494 164:2036 165:2648 166:1271 167:2309 168:4021 169:863 170:5562 171:1128 172:4675 173:3485 174:882 175:1356 176:3873 177:4803 178:4357 179:2308 180:3057 181:4548 182:4024 183:2838 184:2036 185:21864 186:5789 187:4959 188:4578 189:4520 190:9832 191:1543 192:11476 193:9641 194:7887 195:5818 196:3394 197:3267 198:6281 199:6059 200:8225 201:6388 202:10728 203:10660 204:4799 205:3723 206:4558 207:4000 208:4394 209:5459 210:4765 211:2680 212:5107 213:4141 214:1042 215:47 216:7291 217:3585 218:1701 219:414 220:2196 221:1312 222:936 223:3416 End of report