IPv4 R&E Routing Table Report 23:05 GMT Mon 06 Oct, 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: 1003026 Prefixes after maximum aggregation (per Origin AS): 389690 Deaggregation factor: 2.57 Unique aggregates announced (without unneeded subnets): 495884 Number of IPv4 prefixes with a valid ROA: 574442 Number of IPv4 prefixes with an invalid ROA: 729 Number of IPv4 prefixes with no ROA: 427855 Total ASes present in the Internet Routing Table: 77264 Prefixes per ASN: 12.98 Origin-only ASes present in the Internet Routing Table: 66202 Origin ASes announcing only one prefix: 27043 Transit ASes present in the Internet Routing Table: 11062 Transit-only ASes present in the Internet Routing Table: 544 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: 1028 Number of instances of unregistered ASNs: 1057 Number of 32-bit ASNs allocated by the RIRs: 47653 Number of 32-bit ASNs visible in the Routing Table: 39031 Prefixes from 32-bit ASNs in the Routing Table: 211801 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 427 Number of addresses announced to Internet: 3110764544 Equivalent to 185 /8s, 106 /16s and 128 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 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: 326810 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 269276 Total APNIC prefixes after maximum aggregation: 79558 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 259080 Unique aggregates announced from the APNIC address blocks: 105823 APNIC Region origin ASes present in the Internet Routing Table: 14780 APNIC Prefixes per ASN: 17.53 APNIC Region origin ASes announcing only one prefix: 4475 APNIC Region transit ASes present in the Internet Routing Table: 1987 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: 10355 Number of APNIC addresses announced to Internet: 751147264 Equivalent to 44 /8s, 197 /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: 293580 Total ARIN prefixes after maximum aggregation: 133661 ARIN Deaggregation factor: 2.20 Prefixes being announced from the ARIN address blocks: 295172 Unique aggregates announced from the ARIN address blocks: 142969 ARIN Region origin ASes present in the Internet Routing Table: 19292 ARIN Prefixes per ASN: 15.30 ARIN Region origin ASes announcing only one prefix: 7088 ARIN Region transit ASes present in the Internet Routing Table: 1918 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5335 Number of ARIN addresses announced to Internet: 1351796224 Equivalent to 80 /8s, 146 /16s and 198 /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: 279502 Total RIPE prefixes after maximum aggregation: 138347 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 279030 Unique aggregates announced from the RIPE address blocks: 180674 RIPE Region origin ASes present in the Internet Routing Table: 29042 RIPE Prefixes per ASN: 9.61 RIPE Region origin ASes announcing only one prefix: 12092 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: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12738 Number of RIPE addresses announced to Internet: 732975616 Equivalent to 43 /8s, 176 /16s and 82 /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: 124747 Total LACNIC prefixes after maximum aggregation: 30603 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 120966 Unique aggregates announced from the LACNIC address blocks: 49475 LACNIC Region origin ASes present in the Internet Routing Table: 11303 LACNIC Prefixes per ASN: 10.70 LACNIC Region origin ASes announcing only one prefix: 2670 LACNIC Region transit ASes present in the Internet Routing Table: 2530 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: 9269 Number of LACNIC addresses announced to Internet: 170791680 Equivalent to 10 /8s, 46 /16s and 19 /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: 34893 Total AfriNIC prefixes after maximum aggregation: 6835 AfriNIC Deaggregation factor: 5.11 Prefixes being announced from the AfriNIC address blocks: 48351 Unique aggregates announced from the AfriNIC address blocks: 16565 AfriNIC Region origin ASes present in the Internet Routing Table: 1967 AfriNIC Prefixes per ASN: 24.58 AfriNIC Region origin ASes announcing only one prefix: 718 AfriNIC Region transit ASes present in the Internet Routing Table: 380 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1334 Number of AfriNIC addresses announced to Internet: 103820032 Equivalent to 6 /8s, 48 /16s and 43 /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 13670 8730 116 CHINAMOBILE-CN China Mobile Communication 7545 6183 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 18403 4529 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 312 BBIL-AP BHARTI Airtel Ltd., IN 7552 3948 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3725 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3302 1869 100 VNPT-AS-VN VNPT Corp, VN 56046 3120 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2927 863 499 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 9304 2415 509 1560 HUTCHISON-AS-AP HGC Global Communications 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 14295 40991 5377 AMAZON-02, US 11492 4752 320 794 CABLEONE, US 22773 3979 3050 332 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3859 286 85 VIASAT-SP-BACKBONE, US 6327 3679 1320 82 SHAW, CA 396982 3268 4823 463 GOOGLE-CLOUD-PLATFORM, US 749 3220 54766 2471 DNIC-AS-00749, US 4155 3089 240 1718 USDA-1, US 174 3028 8763 844 COGENT-174, US 16625 2909 1240 2174 AKAMAI-AS, 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 7413 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3987 374 2244 M247, RO 20940 3916 3395 124 AKAMAI-ASN1, NL 12389 3123 2315 867 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2467 176 1791 CDNEXT, GB 34984 2415 363 576 TELLCOM-AS, TR 203020 1851 200 900 HOSTROYALE, IN 8452 1648 1852 14 TE-AS TE-AS, EG 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 12380 3278 574 UNINET, MX 10620 3504 474 1059 Telmex Colombia S.A., CO 13999 2543 511 346 Mega Cable, S.A. de C.V., MX 11830 1989 369 64 Instituto Costarricense de Electricidad y 28573 1356 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1354 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1177 371 22 Telefonica del Peru S.A.A., PE 22884 1064 68 349 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1010 2486 56 TIM SA, BR 11172 917 148 66 Alestra, S. de R.L. de C.V., MX 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 1766 600 27 RAYA-AS, EG 36992 1508 1498 383 ETISALAT-MISR, EG 29571 1283 102 53 ORANGE-COTE-IVOIRE, CI 36903 1250 554 97 MT-MPLS, MA 24863 1183 389 20 LINKdotNET-AS, EG 37069 1077 1096 13 MOBINIL, EG 36935 939 520 43 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 568 82 3 KENET-AS, KE 15399 551 56 54 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 14295 40991 5377 AMAZON-02, US 9808 13670 8730 116 CHINAMOBILE-CN China Mobile Communication 8151 12380 3278 574 UNINET, MX 12479 7413 1711 149 UNI2-AS, ES 7545 6183 835 603 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4752 320 794 CABLEONE, US 18403 4529 347 26 FPT-AS-AP FPT Telecom Company, VN 9498 4470 536 312 BBIL-AP BHARTI Airtel Ltd., IN 9009 3987 374 2244 M247, RO 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 13670 13554 CHINAMOBILE-CN China Mobile Communications Grou 8151 12380 11806 UNINET, MX 12479 7413 7264 UNI2-AS, ES 7545 6183 5580 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4529 4503 FPT-AS-AP FPT Telecom Company, VN 9498 4470 4158 BBIL-AP BHARTI Airtel Ltd., IN 11492 4752 3958 CABLEONE, US 7552 3948 3920 VIETEL-AS-AP Viettel Group, VN 20940 3916 3792 AKAMAI-ASN1, NL 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 7029 WINDSTREAM, US 396146 UNALLOCATED 8.21.227.0/24 3356 LEVEL3, 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 3356 LEVEL3, US 395195 UNALLOCATED 8.38.115.0/24 33132 CROWNCASTLE-AS33132, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 14.192.20.0/22 Origin: 26658 HENGTONG-IDC-LLC, US 14.192.20.0/22 Transit: 21859 ZEN-ECN, US 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 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 /11:93 /12:301 /13:579 /14:1197 /15:2120 /16:13752 /17:8140 /18:13383 /19:24516 /20:44190 /21:51697 /22:112222 /23:103646 /24:627119 /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 6603 12380 UNINET, MX 12479 6379 7413 UNI2-AS, ES 11492 3565 4752 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3467 3679 SHAW, CA 7155 2818 3859 VIASAT-SP-BACKBONE, US 22773 2524 3979 ASN-CXA-ALL-CCI-22773-RDC, US 16509 2391 14295 AMAZON-02, US 30036 2289 2629 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2217 3504 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) ---------------------------------------------- 1:2429 2:1515 3:947 4:10 5:4838 6:169 7:6 8:1528 9:6 11:172 12:1243 13:565 14:2642 15:402 16:304 17:387 18:905 20:574 21:4 22:188 23:7862 24:2649 25:2 27:2789 29:19 31:3355 32:31 33:1 34:84 35:272 36:4461 37:4545 38:9520 39:1089 40:295 41:4354 42:2017 43:2774 44:387 45:18958 46:5184 47:342 49:2032 50:2047 51:590 52:1592 54:359 55:1093 56:11 57:282 58:2284 59:1321 60:1188 61:2950 62:3079 63:1761 64:5654 65:2139 66:4963 67:3105 68:1099 69:3926 70:1051 71:631 72:2972 74:2837 75:1494 76:596 77:2776 78:1897 79:1750 80:2247 81:2105 82:3426 83:1470 84:1980 85:3512 86:1101 87:2123 88:1321 89:4490 90:804 91:8377 92:2778 93:2981 94:4167 95:4464 96:1472 97:312 98:952 99:738 100:71 101:1477 102:4127 103:32819 104:5366 105:755 106:895 107:2662 108:1202 109:4221 110:2257 111:3765 112:2651 113:1862 114:1992 115:2301 116:2095 117:2941 118:3051 119:2006 120:2260 121:1349 122:2803 123:2253 124:1707 125:2910 126:93 128:1571 129:957 130:1280 131:2130 132:784 133:462 134:1605 135:365 136:1488 137:1121 138:2810 139:1603 140:1632 141:1544 142:2033 143:2055 144:1264 145:627 146:2178 147:2124 148:2738 149:2922 150:1285 151:2571 152:2169 153:574 154:7467 155:2062 156:3422 157:2010 158:1433 159:2594 160:3570 161:1993 162:3949 163:2288 164:1943 165:2561 166:1563 167:2097 168:3817 169:775 170:5365 171:1026 172:4240 173:3403 174:909 175:1356 176:3806 177:4714 178:4268 179:2270 180:2762 181:4248 182:3724 183:2550 184:2049 185:21627 186:5379 187:4682 188:4319 189:4374 190:9706 191:1541 192:11367 193:9467 194:7789 195:5571 196:3269 197:3350 198:6075 199:8757 200:8088 201:6349 202:10424 203:10567 204:4576 205:3617 206:4384 207:3562 208:4287 209:5299 210:4708 211:2679 212:4793 213:3873 214:1035 215:52 216:6900 217:3344 218:1564 219:396 220:2193 221:1234 222:750 223:3032 End of report