IPv4 R&E Routing Table Report 23:05 GMT Tue 11 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: 1009451 Prefixes after maximum aggregation (per Origin AS): 391266 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 500616 Number of IPv4 prefixes with a valid ROA: 585252 Number of IPv4 prefixes with an invalid ROA: 633 Number of IPv4 prefixes with no ROA: 423566 Total ASes present in the Internet Routing Table: 77435 Prefixes per ASN: 13.04 Origin-only ASes present in the Internet Routing Table: 66346 Origin ASes announcing only one prefix: 27100 Transit ASes present in the Internet Routing Table: 11089 Transit-only ASes present in the Internet Routing Table: 548 Paths with bogon ASNs present in the IPv4 Routing Table: 27 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: 962 Number of instances of unregistered ASNs: 991 Number of 32-bit ASNs allocated by the RIRs: 47952 Number of 32-bit ASNs visible in the Routing Table: 39243 Prefixes from 32-bit ASNs in the Routing Table: 215367 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: 409 Number of addresses announced to Internet: 3102583040 Equivalent to 184 /8s, 237 /16s and 169 /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: 331053 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 270859 Total APNIC prefixes after maximum aggregation: 80038 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 260993 Unique aggregates announced from the APNIC address blocks: 105977 APNIC Region origin ASes present in the Internet Routing Table: 14829 APNIC Prefixes per ASN: 17.60 APNIC Region origin ASes announcing only one prefix: 4498 APNIC Region transit ASes present in the Internet Routing Table: 2004 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: 10408 Number of APNIC addresses announced to Internet: 748430848 Equivalent to 44 /8s, 156 /16s and 38 /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: 296185 Total ARIN prefixes after maximum aggregation: 133518 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296323 Unique aggregates announced from the ARIN address blocks: 145206 ARIN Region origin ASes present in the Internet Routing Table: 19358 ARIN Prefixes per ASN: 15.31 ARIN Region origin ASes announcing only one prefix: 7119 ARIN Region transit ASes present in the Internet Routing Table: 1926 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: 5405 Number of ARIN addresses announced to Internet: 1344980992 Equivalent to 80 /8s, 42 /16s and 200 /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: 280844 Total RIPE prefixes after maximum aggregation: 139389 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 281223 Unique aggregates announced from the RIPE address blocks: 182192 RIPE Region origin ASes present in the Internet Routing Table: 29093 RIPE Prefixes per ASN: 9.67 RIPE Region origin ASes announcing only one prefix: 12098 RIPE Region transit ASes present in the Internet Routing Table: 4048 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12799 Number of RIPE addresses announced to Internet: 735234048 Equivalent to 43 /8s, 210 /16s and 200 /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: 125007 Total LACNIC prefixes after maximum aggregation: 30759 LACNIC Deaggregation factor: 4.06 Prefixes being announced from the LACNIC address blocks: 121065 Unique aggregates announced from the LACNIC address blocks: 49601 LACNIC Region origin ASes present in the Internet Routing Table: 11305 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2664 LACNIC Region transit ASes present in the Internet Routing Table: 2550 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: 9289 Number of LACNIC addresses announced to Internet: 170739712 Equivalent to 10 /8s, 45 /16s and 72 /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: 35594 Total AfriNIC prefixes after maximum aggregation: 6900 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 49438 Unique aggregates announced from the AfriNIC address blocks: 17282 AfriNIC Region origin ASes present in the Internet Routing Table: 1980 AfriNIC Prefixes per ASN: 24.97 AfriNIC Region origin ASes announcing only one prefix: 721 AfriNIC Region transit ASes present in the Internet Routing Table: 375 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: 1342 Number of AfriNIC addresses announced to Internet: 102976768 Equivalent to 6 /8s, 35 /16s and 77 /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 13390 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6096 833 588 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4523 538 317 BBIL-AP BHARTI Airtel Ltd., IN 18403 4383 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3974 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3719 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3317 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3248 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2937 863 509 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2485 272 1919 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 14222 37250 5367 AMAZON-02, US 11492 4785 317 804 CABLEONE, US 22773 4638 3092 397 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3688 1320 82 SHAW, CA 396982 3290 4827 473 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 2892 1235 2159 AKAMAI-AS, US 36352 2847 231 910 AS-COLOCROSSING, US 30036 2659 367 285 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 7286 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4023 381 2287 M247, RO 20940 3886 3395 125 AKAMAI-ASN1, NL 12389 3142 2317 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2479 175 1782 CDNEXT, GB 34984 2417 363 575 TELLCOM-AS, TR 8452 1685 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1465 166 844 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 12519 3302 579 UNINET, MX 10620 3456 463 1099 Telmex Colombia S.A., CO 13999 2499 511 350 Mega Cable, S.A. de C.V., MX 11830 1991 369 64 Instituto Costarricense de Electricidad y 28573 1373 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1270 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1027 2486 56 TIM SA, BR 18881 911 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 1854 630 32 RAYA-AS, EG 36992 1680 1509 397 ETISALAT-MISR, EG 29571 1270 100 71 ORANGE-COTE-IVOIRE, CI 24863 1265 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1104 523 34 Vodafone-, EG 37069 1084 1100 11 MOBINIL, EG 20011 577 153 210 NTT-DATA-Inc, ZA 36914 563 82 3 KENET-AS, KE 15399 551 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 14222 37250 5367 AMAZON-02, US 9808 13390 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12519 3302 579 UNINET, MX 12479 7286 1711 149 UNI2-AS, ES 7545 6096 833 588 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4785 317 804 CABLEONE, US 22773 4638 3092 397 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4523 538 317 BBIL-AP BHARTI Airtel Ltd., IN 18403 4383 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 13390 13273 CHINAMOBILE-CN China Mobile Communications Grou 8151 12519 11940 UNINET, MX 12479 7286 7137 UNI2-AS, ES 7545 6096 5508 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4383 4359 FPT-AS-AP FPT Telecom Company, VN 22773 4638 4241 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4523 4206 BBIL-AP BHARTI Airtel Ltd., IN 11492 4785 3981 CABLEONE, US 7552 3974 3946 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 53775 UNALLOCATED 8.20.88.0/24 3737 AS-PTD, US 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 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 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 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 /8:18 /9:14 /10:41 /11:94 /12:298 /13:578 /14:1193 /15:2091 /16:13638 /17:8140 /18:13405 /19:24584 /20:44296 /21:51836 /22:112526 /23:104632 /24:632067 /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 6716 12519 UNINET, MX 12479 6230 7286 UNI2-AS, ES 11492 3598 4785 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3476 3688 SHAW, CA 22773 2980 4638 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2424 14222 AMAZON-02, US 30036 2315 2659 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2211 3456 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) ---------------------------------------------- 1:2431 2:1527 3:959 4:10 5:4927 6:189 7:6 8:1514 9:6 11:172 12:1233 13:548 14:2624 15:408 16:303 17:385 18:907 20:583 21:4 22:188 23:8034 24:2561 25:2 27:2784 29:19 31:3350 32:31 33:1 34:84 35:275 36:4547 37:4569 38:9383 39:1174 40:434 41:4438 42:1948 43:2836 44:401 45:19205 46:5159 47:365 49:2152 50:2052 51:595 52:1624 54:352 55:1103 56:11 57:289 58:2313 59:1318 60:1188 61:3015 62:3101 63:1750 64:5890 65:2125 66:5876 67:3238 68:1489 69:4096 70:1039 71:625 72:2982 74:2884 75:1511 76:600 77:2763 78:1907 79:1784 80:2271 81:2113 82:3603 83:1469 84:2000 85:3575 86:1103 87:2126 88:1326 89:4507 90:829 91:8385 92:2800 93:2985 94:4142 95:4528 96:1457 97:312 98:952 99:758 100:68 101:1334 102:4228 103:32756 104:5449 105:778 106:912 107:2799 108:1193 109:4235 110:2250 111:3855 112:2753 113:1889 114:2081 115:2245 116:2124 117:3094 118:3056 119:2044 120:2345 121:1503 122:2847 123:2264 124:1643 125:2929 126:125 128:1578 129:958 130:1480 131:2216 132:776 133:461 134:1624 135:366 136:1493 137:1135 138:2855 139:1597 140:1693 141:1555 142:2244 143:2129 144:1331 145:630 146:2178 147:2114 148:2774 149:2842 150:1295 151:2640 152:2264 153:597 154:8109 155:2223 156:3226 157:2193 158:1406 159:2638 160:3667 161:2003 162:3975 163:2321 164:1954 165:2558 166:1323 167:2117 168:3826 169:779 170:5444 171:1091 172:4497 173:3425 174:910 175:1352 176:3754 177:4708 178:4289 179:2277 180:2893 181:4322 182:3786 183:2581 184:2060 185:21651 186:5391 187:4711 188:4385 189:4429 190:9692 191:1529 192:11402 193:9492 194:7827 195:5589 196:3264 197:3335 198:6057 199:6101 200:8044 201:6379 202:10422 203:10548 204:4620 205:3641 206:4352 207:3712 208:4272 209:5314 210:4708 211:2648 212:4887 213:3999 214:1039 215:54 216:7128 217:3348 218:1572 219:402 220:2202 221:1266 222:762 223:3125 End of report