IPv4 R&E Routing Table Report 23:05 GMT Mon 24 Nov, 2025 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 1014327 Prefixes after maximum aggregation (per Origin AS): 392763 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 503237 Number of IPv4 prefixes with a valid ROA: 590781 Number of IPv4 prefixes with an invalid ROA: 786 Number of IPv4 prefixes with no ROA: 422760 Total ASes present in the Internet Routing Table: 77493 Prefixes per ASN: 13.09 Origin-only ASes present in the Internet Routing Table: 66386 Origin ASes announcing only one prefix: 27079 Transit ASes present in the Internet Routing Table: 11107 Transit-only ASes present in the Internet Routing Table: 554 Paths with bogon ASNs present in the IPv4 Routing Table: 29 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1033 Number of instances of unregistered ASNs: 1062 Number of 32-bit ASNs allocated by the RIRs: 48034 Number of 32-bit ASNs visible in the Routing Table: 39326 Prefixes from 32-bit ASNs in the Routing Table: 216659 Number of bogon 32-bit ASNs visible in the Routing Table: 78 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 485 Number of addresses announced to Internet: 3100362240 Equivalent to 184 /8s, 203 /16s and 198 /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: 331985 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 273962 Total APNIC prefixes after maximum aggregation: 80768 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 261709 Unique aggregates announced from the APNIC address blocks: 106264 APNIC Region origin ASes present in the Internet Routing Table: 14856 APNIC Prefixes per ASN: 17.62 APNIC Region origin ASes announcing only one prefix: 4489 APNIC Region transit ASes present in the Internet Routing Table: 2010 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10439 Number of APNIC addresses announced to Internet: 753047808 Equivalent to 44 /8s, 226 /16s and 153 /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: 296952 Total ARIN prefixes after maximum aggregation: 133783 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296809 Unique aggregates announced from the ARIN address blocks: 145442 ARIN Region origin ASes present in the Internet Routing Table: 19345 ARIN Prefixes per ASN: 15.34 ARIN Region origin ASes announcing only one prefix: 7108 ARIN Region transit ASes present in the Internet Routing Table: 1927 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5408 Number of ARIN addresses announced to Internet: 1337483520 Equivalent to 79 /8s, 184 /16s and 97 /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: 281603 Total RIPE prefixes after maximum aggregation: 139899 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 282261 Unique aggregates announced from the RIPE address blocks: 183267 RIPE Region origin ASes present in the Internet Routing Table: 29121 RIPE Prefixes per ASN: 9.69 RIPE Region origin ASes announcing only one prefix: 12104 RIPE Region transit ASes present in the Internet Routing Table: 4045 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 45 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12829 Number of RIPE addresses announced to Internet: 735535104 Equivalent to 43 /8s, 215 /16s and 96 /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: 125174 Total LACNIC prefixes after maximum aggregation: 30749 LACNIC Deaggregation factor: 4.07 Prefixes being announced from the LACNIC address blocks: 121190 Unique aggregates announced from the LACNIC address blocks: 49569 LACNIC Region origin ASes present in the Internet Routing Table: 11303 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2656 LACNIC Region transit ASes present in the Internet Routing Table: 2546 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9302 Number of LACNIC addresses announced to Internet: 170774528 Equivalent to 10 /8s, 45 /16s and 208 /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: 35603 Total AfriNIC prefixes after maximum aggregation: 6884 AfriNIC Deaggregation factor: 5.17 Prefixes being announced from the AfriNIC address blocks: 51873 Unique aggregates announced from the AfriNIC address blocks: 18305 AfriNIC Region origin ASes present in the Internet Routing Table: 1985 AfriNIC Prefixes per ASN: 26.13 AfriNIC Region origin ASes announcing only one prefix: 722 AfriNIC Region transit ASes present in the Internet Routing Table: 378 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1348 Number of AfriNIC addresses announced to Internet: 103277312 Equivalent to 6 /8s, 39 /16s and 227 /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 13347 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6066 832 593 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4570 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4431 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3984 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3705 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3318 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3312 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2947 865 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2482 272 1918 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14165 37200 5379 AMAZON-02, US 11492 4789 317 804 CABLEONE, US 22773 4746 3098 366 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3302 4860 480 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 2873 1229 2147 AKAMAI-AS, US 36352 2852 231 910 AS-COLOCROSSING, US 30036 2655 367 342 MEDIACOM-ENTERPRISE-BUSINESS, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7289 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4027 381 2284 M247, RO 20940 3870 3394 124 AKAMAI-ASN1, NL 12389 3143 2317 870 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2526 180 1826 CDNEXT, GB 34984 2418 363 576 TELLCOM-AS, TR 8452 1698 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1485 169 855 HOSTROYALE, IN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12593 3308 575 UNINET, MX 10620 3458 463 1101 Telmex Colombia S.A., CO 13999 2503 511 346 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1374 2432 266 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1265 371 22 Telefonica del Peru S.A.A., PE 22884 1055 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1015 2486 56 TIM SA, BR 18881 916 1127 31 TELEFONICA BRASIL S.A, BR Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1985 630 32 RAYA-AS, EG 36992 1681 1509 397 ETISALAT-MISR, EG 24863 1260 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1104 523 34 Vodafone-, EG 37069 1086 1112 11 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 561 82 3 KENET-AS, KE 15399 554 57 56 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14165 37200 5379 AMAZON-02, US 9808 13347 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12593 3308 575 UNINET, MX 12479 7289 1711 149 UNI2-AS, ES 7545 6066 832 593 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4789 317 804 CABLEONE, US 22773 4746 3098 366 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4570 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4431 347 24 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13347 13230 CHINAMOBILE-CN China Mobile Communications Grou 8151 12593 12018 UNINET, MX 12479 7289 7140 UNI2-AS, ES 7545 6066 5473 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4431 4407 FPT-AS-AP FPT Telecom Company, VN 22773 4746 4380 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4570 4234 BBIL-AP BHARTI Airtel Ltd., IN 11492 4789 3985 CABLEONE, US 7552 3984 3956 VIETEL-AS-AP Viettel Group, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/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 12.17.5.0/24 174 COGENT-174, 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/Singapore/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: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174, US 23.137.224.0/24 Origin: 29802 HVC-AS, US 23.137.224.0/24 Transit: 174 COGENT-174, US 23.137.225.0/24 Origin: 29802 HVC-AS, US 23.137.225.0/24 Transit: 174 COGENT-174, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:41 /11:94 /12:298 /13:579 /14:1196 /15:2090 /16:13650 /17:8160 /18:13413 /19:24635 /20:44415 /21:51870 /22:112795 /23:104855 /24:636206 /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 6786 12593 UNINET, MX 12479 6232 7289 UNI2-AS, ES 11492 3602 4789 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3019 4746 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2418 14165 AMAZON-02, US 30036 2312 2655 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3458 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2446 2:1539 3:971 4:10 5:4980 6:188 7:6 8:1505 9:6 11:172 12:1232 13:554 14:2602 15:413 16:303 17:388 18:901 20:585 21:4 22:188 23:8063 24:2560 25:2 27:2776 29:19 31:3392 32:31 33:1 34:84 35:285 36:4576 37:4567 38:9314 39:1174 40:464 41:4425 42:1946 43:2881 44:402 45:19501 46:5080 47:374 49:2156 50:2047 51:597 52:1567 54:289 55:1110 56:11 57:298 58:2317 59:1323 60:1185 61:3066 62:3085 63:1745 64:5948 65:2114 66:5887 67:3237 68:1491 69:4156 70:1031 71:620 72:3039 74:2916 75:1519 76:601 77:2763 78:1911 79:1774 80:2291 81:2085 82:3731 83:1464 84:2020 85:3594 86:1101 87:2138 88:1334 89:4609 90:836 91:8394 92:2836 93:2990 94:4216 95:4574 96:1453 97:311 98:952 99:769 100:68 101:1344 102:4287 103:32835 104:5489 105:783 106:914 107:2798 108:1195 109:4240 110:2268 111:3867 112:2769 113:1906 114:2093 115:2251 116:2137 117:3087 118:3082 119:2032 120:2349 121:1500 122:2935 123:2282 124:1648 125:2929 126:125 128:1574 129:956 130:1490 131:2248 132:767 133:462 134:1611 135:389 136:1496 137:1138 138:2852 139:1591 140:1713 141:1551 142:2286 143:2129 144:1313 145:633 146:2176 147:2158 148:2794 149:2858 150:1314 151:2651 152:2278 153:610 154:9224 155:2256 156:4120 157:2214 158:1454 159:2661 160:3682 161:1991 162:3992 163:2327 164:1961 165:2609 166:1307 167:2144 168:3852 169:779 170:5420 171:1112 172:4458 173:3416 174:914 175:1359 176:3759 177:4691 178:4327 179:2263 180:2967 181:4328 182:3820 183:2532 184:2063 185:21676 186:5453 187:4740 188:4424 189:4443 190:9684 191:1521 192:11415 193:9509 194:7844 195:5592 196:3245 197:3301 198:6052 199:6097 200:8072 201:6372 202:10401 203:10559 204:4597 205:3665 206:4361 207:3747 208:4236 209:5381 210:4719 211:2649 212:4885 213:3997 214:1040 215:52 216:7113 217:3336 218:1577 219:404 220:2199 221:1272 222:762 223:3150 End of report