[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Mon Oct 21 20:10:38 UTC 2024
IPv4 R&E Routing Table Report 20:10 GMT Mon 21 Oct, 2024
IPv4 BGP Table (R&E) as seen at CERNET.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/CERNET/
Analysis Summary
----------------
BGP routing table entries examined: 17875
Prefixes after maximum aggregation (per Origin AS): 9947
Deaggregation factor: 1.80
Unique aggregates announced (without unneeded subnets): 11011
Number of IPv4 prefixes with a valid ROA: 7146
Number of IPv4 prefixes with an invalid ROA: 7
Number of IPv4 prefixes with no ROA: 10722
Total ASes present in the Internet Routing Table: 2627
Prefixes per ASN: 6.80
Origin-only ASes present in the Internet Routing Table: 2278
Origin ASes announcing only one prefix: 1010
Transit ASes present in the Internet Routing Table: 349
Transit-only ASes present in the Internet Routing Table: 66
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 16
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 1
Number of instances of unregistered ASNs: 1
Number of 32-bit ASNs allocated by the RIRs: 45594
Number of 32-bit ASNs visible in the Routing Table: 638
Prefixes from 32-bit ASNs in the Routing Table: 1822
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 2
Number of addresses announced to Internet: 192942224
Equivalent to 11 /8s, 128 /16s and 16 /24s
Percentage of available address space announced: 5.2
Percentage of allocated address space announced: 5.2
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: 2232
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3799
Total APNIC prefixes after maximum aggregation: 2043
APNIC Deaggregation factor: 1.86
Prefixes being announced from the APNIC address blocks: 3799
Unique aggregates announced from the APNIC address blocks: 2421
APNIC Region origin ASes present in the Internet Routing Table: 507
APNIC Prefixes per ASN: 7.49
APNIC Region origin ASes announcing only one prefix: 217
APNIC Region transit ASes present in the Internet Routing Table: 48
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 12
Number of APNIC region 32-bit ASNs visible in the Routing Table: 203
Number of APNIC addresses announced to Internet: 44591360
Equivalent to 2 /8s, 168 /16s and 105 /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, 131072-153913
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: 7948
Total ARIN prefixes after maximum aggregation: 4340
ARIN Deaggregation factor: 1.83
Prefixes being announced from the ARIN address blocks: 7960
Unique aggregates announced from the ARIN address blocks: 4761
ARIN Region origin ASes present in the Internet Routing Table: 1200
ARIN Prefixes per ASN: 6.63
ARIN Region origin ASes announcing only one prefix: 430
ARIN Region transit ASes present in the Internet Routing Table: 149
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 16
Number of ARIN region 32-bit ASNs visible in the Routing Table: 203
Number of ARIN addresses announced to Internet: 83126784
Equivalent to 4 /8s, 244 /16s and 106 /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, 47/8, 48/8, 50/8, 52/8, 53/8,
54/8, 55/8, 56/8, 57/8, 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: 3572
Total RIPE prefixes after maximum aggregation: 2871
RIPE Deaggregation factor: 1.24
Prefixes being announced from the RIPE address blocks: 3560
Unique aggregates announced from the RIPE address blocks: 2908
RIPE Region origin ASes present in the Internet Routing Table: 663
RIPE Prefixes per ASN: 5.37
RIPE Region origin ASes announcing only one prefix: 291
RIPE Region transit ASes present in the Internet Routing Table: 101
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 154
Number of RIPE addresses announced to Internet: 58586768
Equivalent to 3 /8s, 125 /16s and 246 /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,
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: 1456
Total LACNIC prefixes after maximum aggregation: 549
LACNIC Deaggregation factor: 2.65
Prefixes being announced from the LACNIC address blocks: 1455
Unique aggregates announced from the LACNIC address blocks: 734
LACNIC Region origin ASes present in the Internet Routing Table: 164
LACNIC Prefixes per ASN: 8.87
LACNIC Region origin ASes announcing only one prefix: 59
LACNIC Region transit ASes present in the Internet Routing Table: 27
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 14
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 70
Number of LACNIC addresses announced to Internet: 4284672
Equivalent to 0 /8s, 65 /16s and 97 /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: 1099
Total AfriNIC prefixes after maximum aggregation: 143
AfriNIC Deaggregation factor: 7.69
Prefixes being announced from the AfriNIC address blocks: 1099
Unique aggregates announced from the AfriNIC address blocks: 185
AfriNIC Region origin ASes present in the Internet Routing Table: 26
AfriNIC Prefixes per ASN: 42.27
AfriNIC Region origin ASes announcing only one prefix: 13
AfriNIC Region transit ASes present in the Internet Routing Table: 8
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 6
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 8
Number of AfriNIC addresses announced to Internet: 2352128
Equivalent to 0 /8s, 35 /16s and 228 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 45/8, 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
2907 590 2170 464 SINET-AS Research Organization of Informa
1237 191 74 145 KREONET-AS-KR KISTI, KR
58647 180 18 2 KAGAWAU-AS Kagawa University, JP
7575 172 329 115 AARNET-AS-AP Australian Academic and Rese
55824 132 18 19 NKN-CORE-NW NKN Core Network, IN
4538 113 4176 70 ERX-CERNET-BKB China Education and Resear
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 68 37 10 UNINET-AS-AP UNINET-, TH
2697 60 4 35 ERX-ERNET-AS Education and Research Netwo
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2152 432 507 97 CENIC-2152, US
2920 223 44 45 LACOE, US
376 201 162 150 RISQ-AS, CA
5786 197 16 1 UPRENET, PR
18558 140 18 4 NETBLK-RCOEK, US
81 134 517 33 NCREN, US
23024 95 7 21 OCDE, US
21976 91 50 17 NJEDGE-NET, US
237 85 541 50 MERIT-AS-14, US
1736 79 16 1 MU-AS, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 283 1899 249 DFN Verein zur Foerderung eines Deutschen
786 185 1767 182 JANET Jisc Services Limited, GB
8895 132 24 5 ISU Internet Services Unit ISU, SA
559 114 533 104 SWITCH Peering requests: peering at switch.c
1103 97 1759 84 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 26 73 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 78 462 78 BELWUE BelWue-Koordination, DE
3267 76 26 66 NIKS, RU
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 210 180 42 Rede Nacional de Ensino e Pesquisa, BR
28391 154 10 68 Universidad Juarez Autonoma de Tabasco, M
11340 109 25 52 Red Universitaria Nacional, CL
271640 66 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
61468 51 5 17 CEDIA, EC
2715 50 100 36 Fundacao Carlos Chagas Filho de Amparo a
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
4270 46 16 1 Red de Interconexion Universitaria, AR
28614 38 2 2 Fundacao Universidade Regional de Blumena
3596 37 8 4 Universidad Autonoma Metropolitana, MX
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 523 82 3 KENET-AS, KE
2018 379 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
327700 46 16 1 MoRENet, MZ
37215 33 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
37654 5 0 5 RwEdNet-AS, RW
37520 3 16 3 Rhodes-Univ, ZA
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 590 2170 464 SINET-AS Research Organization of Informa
36914 523 82 3 KENET-AS, KE
2152 432 507 97 CENIC-2152, US
2018 379 319 71 TENET-1, ZA
680 283 1899 249 DFN Verein zur Foerderung eines Deutschen
2920 223 44 45 LACOE, US
1916 210 180 42 Rede Nacional de Ensino e Pesquisa, BR
376 201 162 150 RISQ-AS, CA
5786 197 16 1 UPRENET, PR
1237 191 74 145 KREONET-AS-KR KISTI, KR
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 523 520 KENET-AS, KE
2152 432 335 CENIC-2152, US
2018 379 308 TENET-1, ZA
5786 197 196 UPRENET, PR
2920 223 178 LACOE, US
58647 180 178 KAGAWAU-AS Kagawa University, JP
1916 210 168 Rede Nacional de Ensino e Pesquisa, BR
18558 140 136 NETBLK-RCOEK, US
8895 132 127 ISU Internet Services Unit ISU, SA
55824 132 113 NKN-CORE-NW NKN Core Network, IN
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
202.14.117.0/24 Origin: 17827 STOU-AS-TH Sukhothai Thammathirat Open U
202.14.117.0/24 Transit: 4621 UNINET-AS-AP UNINET-, TH
203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP The University
203.9.156.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res
Complete listing at https://bgp.nsrc.org/REN/CERNET/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 /8:0 /9:1 /10:1 /11:1 /12:11
/13:18 /14:31 /15:113 /16:1905 /17:411 /18:433
/19:539 /20:773 /21:793 /22:1370 /23:1417 /24:10053
/25:3 /26:1 /27:0 /28:1 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 502 523 KENET-AS, KE
8895 127 132 ISU Internet Services Unit ISU, SA
2152 40 432 CENIC-2152, US
327700 40 46 MoRENet, MZ
23024 37 95 OCDE, US
32440 37 64 LONI, US
3267 35 76 NIKS, RU
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
200521 31 54 SEAP-AGE, ES
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 5:15 8:2 12:1 14:92 23:6
24:3 31:1 35:3 37:8 38:10 40:1
41:249 44:5 45:45 46:4 47:1 49:10
50:2 52:1 59:18 61:3 62:8 63:32
64:42 65:4 66:42 67:40 68:10 69:19
70:2 71:1 72:7 74:53 76:41 77:10
78:3 79:10 80:12 81:25 82:7 83:7
84:7 85:45 86:5 87:1 89:11 91:43
92:2 93:13 94:2 95:2 96:5 97:1
98:2 102:2 103:266 104:79 108:8 109:2
111:16 113:2 114:24 116:9 117:61 118:33
119:1 121:18 122:8 123:8 125:2 128:52
129:36 130:96 131:59 132:65 133:154 134:103
136:197 137:83 138:58 139:6 140:32 141:3
142:52 143:26 144:24 145:2 146:135 147:60
148:194 149:12 150:36 151:9 152:140 153:14
154:30 155:63 156:132 157:26 158:31 159:22
160:30 161:17 162:21 163:59 164:14 165:49
166:1 167:29 168:119 169:7 170:89 171:1
172:2 173:7 175:5 177:6 179:14 180:15
181:1 182:1 184:2 185:50 186:3 187:21
188:13 189:3 190:18 191:13 192:1299 193:272
194:140 195:75 196:145 197:313 198:500 199:239
200:332 201:38 202:537 203:413 204:388 205:160
206:207 207:280 208:66 209:133 210:123 211:3
212:164 213:6 216:89 217:9 218:2 219:5
220:17 222:1
End of report
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