[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view

REN Routing Table Report cscora at frr.nsrc.org
Tue Dec 13 20:10:37 UTC 2022


IPv4 R&E Routing Table Report   20:10 GMT Tue 13 Dec, 2022

  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:                               14564
    Prefixes after maximum aggregation (per Origin AS):            7738
    Deaggregation factor:                                          1.88
    Unique aggregates announced (without unneeded subnets):        8919
    Number of IPv4 prefixes with a valid ROA:                      3010
    Number of IPv4 prefixes with an invalid ROA:                     36
    Number of IPv4 prefixes with no ROA:                          11518
Total ASes present in the Internet Routing Table:                  2166
    Prefixes per ASN:                                              6.72
Origin-only ASes present in the Internet Routing Table:            1880
Origin ASes announcing only one prefix:                             810
Transit ASes present in the Internet Routing Table:                 286
Transit-only ASes present in the Internet Routing Table:             52
Paths with bogon ASNs present in the IPv4 Routing Table:              0
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      19
    Max AS path prepend of ASN ( 10497)                              11
Prefixes from unregistered ASNs in the Routing Table:                 5
    Number of instances of unregistered ASNs:                         5
Number of 32-bit ASNs allocated by the RIRs:                      40873
Number of 32-bit ASNs visible in the Routing Table:                 489
Prefixes from 32-bit ASNs in the Routing Table:                    1479
Number of bogon 32-bit ASNs visible in the Routing Table:             0
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:              2
Number of addresses announced to Internet:                    151605248
    Equivalent to 9 /8s, 9 /16s and 80 /24s
    Percentage of available address space announced:                4.1
    Percentage of allocated address space announced:                4.1
    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:        1541

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                     4048
    Total APNIC prefixes after maximum aggregation:                2171
    APNIC Deaggregation factor:                                    1.86
Prefixes being announced from the APNIC address blocks:            4049
    Unique aggregates announced from the APNIC address blocks:     2580
APNIC Region origin ASes present in the Internet Routing Table:     556
    APNIC Prefixes per ASN:                                        7.28
APNIC Region origin ASes announcing only one prefix:                240
APNIC Region transit ASes present in the Internet Routing Table:     55
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         15
Number of APNIC region 32-bit ASNs visible in the Routing Table:    214
Number of APNIC addresses announced to Internet:               45106176
    Equivalent to 2 /8s, 176 /16s and 68 /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, 131072-151865
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:                      7244
    Total ARIN prefixes after maximum aggregation:                 4172
    ARIN Deaggregation factor:                                     1.74
Prefixes being announced from the ARIN address blocks:             7256
    Unique aggregates announced from the ARIN address blocks:      4647
ARIN Region origin ASes present in the Internet Routing Table:     1163
    ARIN Prefixes per ASN:                                         6.24
ARIN Region origin ASes announcing only one prefix:                 422
ARIN Region transit ASes present in the Internet Routing Table:     154
Average ARIN Region AS path length visible:                         4.4
    Max ARIN Region AS path length visible:                          19
Number of ARIN region 32-bit ASNs visible in the Routing Table:     176
Number of ARIN addresses announced to Internet:                86633472
    Equivalent to 5 /8s, 41 /16s and 236 /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, 393216-401308
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:                       925
    Total RIPE prefixes after maximum aggregation:                  632
    RIPE Deaggregation factor:                                     1.46
Prefixes being announced from the RIPE address blocks:              918
    Unique aggregates announced from the RIPE address blocks:       642
RIPE Region origin ASes present in the Internet Routing Table:      205
    RIPE Prefixes per ASN:                                         4.48
RIPE Region origin ASes announcing only one prefix:                  83
RIPE Region transit ASes present in the Internet Routing Table:      29
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          12
Number of RIPE region 32-bit ASNs visible in the Routing Table:      25
Number of RIPE addresses announced to Internet:                13156352
    Equivalent to 0 /8s, 200 /16s and 192 /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
                       196608-213403
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:                    1420
    Total LACNIC prefixes after maximum aggregation:                579
    LACNIC Deaggregation factor:                                   2.45
Prefixes being announced from the LACNIC address blocks:           1417
    Unique aggregates announced from the LACNIC address blocks:     785
LACNIC Region origin ASes present in the Internet Routing Table:    158
    LACNIC Prefixes per ASN:                                       8.97
LACNIC Region origin ASes announcing only one prefix:                58
LACNIC Region transit ASes present in the Internet Routing Table:    24
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        12
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    65
Number of LACNIC addresses announced to Internet:               4215552
    Equivalent to 0 /8s, 64 /16s and 83 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + 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:                    922
    Total AfriNIC prefixes after maximum aggregation:               179
    AfriNIC Deaggregation factor:                                  5.15
Prefixes being announced from the AfriNIC address blocks:           922
    Unique aggregates announced from the AfriNIC address blocks:    263
AfriNIC Region origin ASes present in the Internet Routing Table:    27
    AfriNIC Prefixes per ASN:                                     34.15
AfriNIC Region origin ASes announcing only one prefix:                7
AfriNIC Region transit ASes present in the Internet Routing Table:    9
Average AfriNIC Region AS path length visible:                      3.6
    Max AfriNIC Region AS path length visible:                        9
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    9
Number of AfriNIC addresses announced to Internet:              2493184
    Equivalent to 0 /8s, 38 /16s and 11 /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         575       2157     462  SINET-AS Research Organization of Infor
  1237         186         74     134  KREONET-AS-KR KISTI, KR
 58647         175         18       2  KAGAWAU-AS Kagawa University, JP
  7575         172        329     118  AARNET-AS-AP Australian Academic and Re
 55824         115         18      12  NKN-CORE-NW NKN Core Network, IN
  4538         110       4160      69  ERX-CERNET-BKB China Education and Rese
  4621          70         37      10  UNINET-AS-AP UNINET-, TH
  9411          66         16       2  NONTRINET-AS-AP Kasetsart University, T
  4762          65          4       1  MAHIDOL-BORDER-AS Mahidol University, T
 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
   376         200        178     149  RISQ-AS, CA
  5786         199         16       1  UPRENET, PR
  2152         146        507      90  CSUNET-NW, US
 18558         134         18       4  NETBLK-RCOEK, US
 23024         113          7      17  OCDE, US
  2920         108         34       7  LACOE, US
 32531          90          6      60  FORDHAM-UNIVERSITY, US
 21976          85         51      18  NJEDGE-NET, US
  1736          81         16       1  MU-AS, US
     3          78        496      15  MIT-GATEWAYS, 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
  8895         134         24       4  ISU Internet Services Unit ISU, SA
  1103         100       1520      87  SURFNET-NL SURFnet, The Netherlands, NL
  3267          57         63      42  RUNNET, RU
  1653          50        151      47  SUNET SUNET Swedish University Network,
  1741          39        149      18  FUNETAS, FI
  3218          21          4      18  COSMOS-3218-AS AS-COSMOS root, RU
  8674          17          2      11  NETNOD-IX Netnod AB, SE
   224          13        256      13  UNINETT UNINETT, The Norwegian Universi
  1101          13        481      13  IP-EEND-AS IP-EEND BV, NL
 47862          12          1       4  ANKABUT, AE

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         157        208      43  Rede Nacional de Ensino e Pesquisa, BR
 28391         152         10      66  Universidad Juarez Autonoma de Tabasco,
 11340          97         24      55  Red Universitaria Nacional, CL
  1251          58         37      19  FUNDACAO DE AMPARO A PESQUISA DO ESTADO
  2715          58        102      38  Fundacao Carlos Chagas Filho de Amparo 
  4270          43         16       1  Red de Interconexion Universitaria, AR
 61468          42          3      15  CEDIA, EC
 28571          40         40      18  UNIVERSIDADE DE SAO PAULO, BR
 28614          38          2       2  Fundacao Universidade Regional de Blume
 19611          37         17       2  Associacao Antonio Vieira - Unisinos, B

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
  2018         363        319      72  TENET-1, ZA
 36914         244         82       3  KENET-AS, KE
  2561          67          4      34  EUN, EG
  8094          48         48      15  PUKNET, ZA
327687          41         28       3  RENU, UG
327700          34         16       1  MoRENet, MZ
 37182          33          8       1  TERNET, TZ
  6879          24          2       9  ENSTINET-, EG
 37501          11         49       6  UOFS, ZA
 37654          10          1       6  RwEdNet-AS, RW

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         575       2157     462  SINET-AS Research Organization of Infor
  2018         363        319      72  TENET-1, ZA
 36914         244         82       3  KENET-AS, KE
   376         200        178     149  RISQ-AS, CA
  5786         199         16       1  UPRENET, PR
  1237         186         74     134  KREONET-AS-KR KISTI, KR
 58647         175         18       2  KAGAWAU-AS Kagawa University, JP
  7575         172        329     118  AARNET-AS-AP Australian Academic and Re
  1916         157        208      43  Rede Nacional de Ensino e Pesquisa, BR
 28391         152         10      66  Universidad Juarez Autonoma de Tabasco,

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  2018         363          291  TENET-1, ZA
 36914         244          241  KENET-AS, KE
  5786         199          198  UPRENET, PR
 58647         175          173  KAGAWAU-AS Kagawa University, JP
  8895         134          130  ISU Internet Services Unit ISU, SA
 18558         134          130  NETBLK-RCOEK, US
  1916         157          114  Rede Nacional de Ensino e Pesquisa, BR
 55824         115          103  NKN-CORE-NW NKN Core Network, IN
  2920         108          101  LACOE, US
 23024         113           96  OCDE, US

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
     22063  UNALLOCATED  153.10.0.0/16             2152  CSUNET-NW, US
     33008  UNALLOCATED  162.248.66.0/24          11096  FLORIDANET, US
     19658  UNALLOCATED  199.27.241.0/24          11096  FLORIDANET, US
    395514  UNALLOCATED  205.213.88.0/24           2381  WISCNET1-AS, US
    394607  UNALLOCATED  216.100.93.0/24          23024  OCDE, US

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS

Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             1103  SURFNET-NL SURFnet, The Netherlands, NL

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-spar

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
192.31.196.0/24      Origin:       112  UNASSIGNED
192.31.196.0/24     Transit:      1103  SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24       Origin:      1103  SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24      Transit:     11537  INTERNET2-RESEARCH-EDU, US

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       /10:2       /11:1       /12:9       
/13:17      /14:26      /15:83      /16:1390    /17:346     /18:386     
/19:450     /20:664     /21:623     /22:1108    /23:1146    /24:8312    
/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
 36914         231         244  KENET-AS, KE
  8895         129         134  ISU Internet Services Unit ISU, SA
 23024          52         113  OCDE, US
 32440          34          49  LONI, US
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
 37182          32          33  TERNET, TZ
 46115          32          35  LUTHER, US
 25977          30          44  HCCS, US
263282          30          37  FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN
 40326          29          33  ECKERD-COLLEGE, US

Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:4         8:2        12:1        14:85       18:43       23:6      
  24:3        35:4        37:1        38:9        40:1        41:143    
  42:4        44:2        45:31       47:1        49:9        50:1      
  52:1        59:19       61:3        62:5        63:4        64:49     
  65:1        66:33       67:42       68:2        69:21       70:2      
  71:1        72:7        74:50       76:37       77:6        80:8      
  81:1        82:6        84:4        85:18       86:6        87:1      
  89:2        91:15       92:1        93:1        96:5        97:2      
  98:2       101:4       102:4       103:301     104:72      108:8      
 109:6       110:4       111:16      114:23      116:6       117:61     
 118:32      119:4       121:17      122:8       123:8       125:4      
 128:64      129:34      130:88      131:55      132:61      133:146    
 134:91      136:198     137:68      138:9       139:6       140:40     
 141:1       142:39      143:28      144:23      146:129     147:53     
 148:185     149:12      150:130     151:5       152:75      153:2      
 154:28      155:51      156:67      157:34      158:39      159:20     
 160:26      161:18      162:19      163:74      164:10      165:51     
 166:1       167:16      168:115     169:9       170:56      171:1      
 172:2       173:7       175:18      176:8       177:10      179:10     
 180:16      181:1       182:6       184:3       185:15      186:3      
 187:19      188:3       189:3       190:18      191:36      192:880    
 193:81      194:57      195:47      196:158     197:146     198:438    
 199:242     200:230     201:39      202:555     203:430     204:335    
 205:124     206:182     207:163     208:66      209:113     210:110    
 211:14      212:127     213:3       216:85      217:1       218:22     
 219:7       220:17      222:2      

End of report


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