IPv4 R&E Routing Table Report 23:05 GMT Thu 04 Dec, 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: 1016295 Prefixes after maximum aggregation (per Origin AS): 393087 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504238 Number of IPv4 prefixes with a valid ROA: 597196 Number of IPv4 prefixes with an invalid ROA: 671 Number of IPv4 prefixes with no ROA: 418428 Total ASes present in the Internet Routing Table: 77490 Prefixes per ASN: 13.12 Origin-only ASes present in the Internet Routing Table: 66419 Origin ASes announcing only one prefix: 27081 Transit ASes present in the Internet Routing Table: 11071 Transit-only ASes present in the Internet Routing Table: 547 Paths with bogon ASNs present in the IPv4 Routing Table: 19 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: 966 Number of instances of unregistered ASNs: 995 Number of 32-bit ASNs allocated by the RIRs: 48129 Number of 32-bit ASNs visible in the Routing Table: 39375 Prefixes from 32-bit ASNs in the Routing Table: 217788 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: 439 Number of addresses announced to Internet: 3100369152 Equivalent to 184 /8s, 203 /16s and 225 /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: 332608 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274874 Total APNIC prefixes after maximum aggregation: 80652 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 262419 Unique aggregates announced from the APNIC address blocks: 106154 APNIC Region origin ASes present in the Internet Routing Table: 14866 APNIC Prefixes per ASN: 17.65 APNIC Region origin ASes announcing only one prefix: 4506 APNIC Region transit ASes present in the Internet Routing Table: 1998 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10449 Number of APNIC addresses announced to Internet: 752877568 Equivalent to 44 /8s, 224 /16s and 0 /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: 297419 Total ARIN prefixes after maximum aggregation: 134316 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 297188 Unique aggregates announced from the ARIN address blocks: 145701 ARIN Region origin ASes present in the Internet Routing Table: 19353 ARIN Prefixes per ASN: 15.36 ARIN Region origin ASes announcing only one prefix: 7110 ARIN Region transit ASes present in the Internet Routing Table: 1921 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: 5420 Number of ARIN addresses announced to Internet: 1337441024 Equivalent to 79 /8s, 183 /16s and 187 /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: 281903 Total RIPE prefixes after maximum aggregation: 139776 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 282868 Unique aggregates announced from the RIPE address blocks: 183828 RIPE Region origin ASes present in the Internet Routing Table: 29099 RIPE Prefixes per ASN: 9.72 RIPE Region origin ASes announcing only one prefix: 12071 RIPE Region transit ASes present in the Internet Routing Table: 4047 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12838 Number of RIPE addresses announced to Internet: 735984896 Equivalent to 43 /8s, 222 /16s and 61 /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: 125564 Total LACNIC prefixes after maximum aggregation: 30806 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121523 Unique aggregates announced from the LACNIC address blocks: 49658 LACNIC Region origin ASes present in the Internet Routing Table: 11318 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2664 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: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9311 Number of LACNIC addresses announced to Internet: 170670848 Equivalent to 10 /8s, 44 /16s and 59 /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: 35569 Total AfriNIC prefixes after maximum aggregation: 6884 AfriNIC Deaggregation factor: 5.17 Prefixes being announced from the AfriNIC address blocks: 51858 Unique aggregates announced from the AfriNIC address blocks: 18518 AfriNIC Region origin ASes present in the Internet Routing Table: 1996 AfriNIC Prefixes per ASN: 25.98 AfriNIC Region origin ASes announcing only one prefix: 730 AfriNIC Region transit ASes present in the Internet Routing Table: 377 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: 1357 Number of AfriNIC addresses announced to Internet: 103164928 Equivalent to 6 /8s, 38 /16s and 44 /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 13287 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6046 835 591 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4590 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4421 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4012 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3709 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3341 828 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3321 1869 100 VNPT-AS-VN VNPT Corp, VN 24560 2949 865 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2511 274 1936 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 14271 37209 5401 AMAZON-02, US 22773 4778 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3313 4861 487 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 2875 1231 2153 AKAMAI-AS, US 36352 2824 231 908 AS-COLOCROSSING, US 174 2693 8767 845 COGENT-174, 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 7284 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3983 374 2279 M247, RO 20940 3858 3394 124 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2538 180 1838 CDNEXT, GB 34984 2423 363 575 TELLCOM-AS, TR 8452 1662 1852 14 TE-AS TE-AS, EG 203020 1613 241 784 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA 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 12664 3296 576 UNINET, MX 10620 3423 459 1144 Telmex Colombia S.A., CO 13999 2508 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1372 2432 263 Claro NXT Telecomunicacoes Ltda, BR 3816 1345 778 213 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 1016 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 1924 368 14 RAYA-AS, EG 36992 1681 1509 399 ETISALAT-MISR, EG 24863 1261 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1085 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1054 521 33 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 566 82 3 KENET-AS, KE 37342 536 32 1 MOVITEL, MZ 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 14271 37209 5401 AMAZON-02, US 9808 13287 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12664 3296 576 UNINET, MX 12479 7284 1711 149 UNI2-AS, ES 7545 6046 835 591 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4778 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4590 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4421 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 13287 13167 CHINAMOBILE-CN China Mobile Communications Grou 8151 12664 12088 UNINET, MX 12479 7284 7135 UNI2-AS, ES 7545 6046 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4778 4411 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4421 4397 FPT-AS-AP FPT Telecom Company, VN 9498 4590 4254 BBIL-AP BHARTI Airtel Ltd., IN 7552 4012 3984 VIETEL-AS-AP Viettel Group, VN 11492 4715 3802 CABLEONE, US 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 23.141.0.0/24 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 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 /13:578 /14:1197 /15:2090 /16:13643 /17:8160 /18:13410 /19:24656 /20:44480 /21:51902 /22:112749 /23:104953 /24:638014 /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 6851 12664 UNINET, MX 12479 6214 7284 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3051 4778 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2432 14271 AMAZON-02, US 30036 2317 2660 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2187 3423 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 2:1535 3:976 4:10 5:4928 6:186 7:6 8:1498 9:6 11:172 12:1230 13:571 14:2603 15:414 16:303 17:388 18:913 20:586 21:4 22:188 23:8068 24:2561 25:2 27:2789 29:19 31:3388 32:31 33:1 34:84 35:285 36:4604 37:4559 38:9389 39:1193 40:446 41:4443 42:1947 43:2879 44:398 45:19537 46:5086 47:386 49:2153 50:2051 51:597 52:1567 54:289 55:1102 56:11 57:301 58:2317 59:1330 60:1166 61:3091 62:3091 63:1735 64:5960 65:2128 66:5894 67:3235 68:1497 69:4177 70:1031 71:618 72:3044 74:2922 75:1515 76:600 77:2770 78:1918 79:1783 80:2301 81:2088 82:3820 83:1454 84:2023 85:3643 86:1104 87:2161 88:1340 89:4571 90:840 91:8434 92:2840 93:3009 94:4221 95:4558 96:1444 97:311 98:953 99:775 100:68 101:1352 102:4326 103:32644 104:5517 105:774 106:912 107:2807 108:1196 109:4246 110:2316 111:3917 112:2792 113:1928 114:2096 115:2262 116:2165 117:3137 118:3045 119:2085 120:2376 121:1500 122:2938 123:2283 124:1651 125:2930 126:125 128:1576 129:957 130:1500 131:2253 132:763 133:462 134:1626 135:489 136:1500 137:1140 138:2900 139:1591 140:1718 141:1548 142:2347 143:2137 144:1352 145:629 146:2166 147:2142 148:2787 149:2890 150:1317 151:2623 152:2276 153:767 154:9181 155:2258 156:4247 157:2232 158:1470 159:2686 160:3659 161:1992 162:3999 163:2321 164:1963 165:2611 166:1306 167:2149 168:3876 169:795 170:5463 171:1117 172:4489 173:3421 174:911 175:1353 176:3777 177:4736 178:4294 179:2285 180:2977 181:4324 182:3836 183:2621 184:2050 185:21653 186:5512 187:4780 188:4446 189:4506 190:9696 191:1565 192:11403 193:9488 194:7844 195:5611 196:3273 197:3304 198:6060 199:6084 200:8062 201:6390 202:10437 203:10513 204:4614 205:3667 206:4347 207:3770 208:4254 209:5391 210:4716 211:2679 212:4886 213:3996 214:1033 215:50 216:7064 217:3387 218:1590 219:406 220:2194 221:1285 222:775 223:3199 End of report